| Year Ended December 31, | ||||||||||||
| 20 17 | 201 6 | 20 15 | ||||||||||
| (in thousands) | ||||||||||||
| Current Tax Provision | ||||||||||||
| Federal | $ | 23,038 | $ | 24,012 | $ | 29,322 | ||||||
| State | 2,150 | 661 | 3,568 | |||||||||
25,188 | 24,673 | 32,890 | ||||||||||
| Deferred Tax Provision | ||||||||||||
| Federal | (6,548 | ) | 4,208 | (532 | ) | |||||||
| State | 227 | 788 | (227 | ) | ||||||||
(6,321 | ) | 4,996 | (759 | ) | ||||||||
| Income Tax Provision | $ | 18,867 | $ | 29,669 | $ | 32,131 | ||||||
| December 31, | ||||||||
| 201 7 | 201 6 | |||||||
| (in thousands) | ||||||||
| D eferred tax assets: | ||||||||
| Allowance for doubtful accounts receivable | $ | 1,304 | $ | 2,077 | ||||
| Accrued risk reserves | 1,288 | 2,277 | ||||||
| A ccrued expenses | 5,556 | 8,907 | ||||||
| Financial reporting depreciation in excess of tax depreciation | 5,301 | 8,642 | ||||||
| Stock based compensation | 607 | 387 | ||||||
| Non-refundable entrance fees | 121 | 211 | ||||||
| Refundable entrance fees | - | 1,923 | ||||||
| Obligation to provide future services | 747 | 1,262 | ||||||
| Deferred revenue | 2,753 | 3,942 | ||||||
| Total deferred tax assets | $ | 17,677 | $ | 29,628 | ||||
| Deferred tax liabilities: | ||||||||
| Unrealized gains on marketable securities | $ | (28,278 | ) | $ | (41,264 | ) | ||
| Deferred gain on sale of assets , net | (2,078 | ) | (3,135 | ) | ||||
| Book basis in excess of tax basis of intangible assets | (1,337 | ) | (1,481 | ) | ||||
| Book basis in excess of tax basis of securities | (1,585 | ) | (2,416 | ) | ||||
| Long –term investments | (2,775 | ) | (3,404 | ) | ||||
| Total deferred tax liabilities | $ | (36,053 | ) | $ | (51,700 | ) | ||
| Net deferred tax liability | $ | (18,376 | ) | $ | (22,072 | ) | ||
| Year Ended December 31, | ||||||||||||
| 20 17 | 201 6 | 20 15 | ||||||||||
| (in thousands) | ||||||||||||
| Tax provision at federal statutory rate | $ | 26,092 | $ | 28,072 | $ | 29,846 | ||||||
| Increase (decrease) in income taxes resulting from: | ||||||||||||
| Tax expense from minority interest | 204 | - | - | |||||||||
| State, net of federal benefit | 2,647 | 1,783 | 1,767 | |||||||||
| Nondeductible expenses | 230 | 156 | 351 | |||||||||
| Share based payments | (237 | ) | - | - | ||||||||
| Insurance expense | (103 | ) | 27 | 6 | ||||||||
| Revalue tax assets/liabilities due to federal tax reform | (8,488 | ) | - | - | ||||||||
| Other, net | (338 | ) | 283 | (372 | ) | |||||||
| Unrecognized tax benefits | 613 | 716 | 2,674 | |||||||||
| Expiration of statute of limitations | (1,753 | ) | (1,368 | ) | (2,141 | ) | ||||||
(7,225 | ) | 1,597 | 2,285 | |||||||||
| Effective income tax expense | $ | 18,867 | $ | 29,669 | $ | 32,131 | ||||||
| Deferred Tax Asset | Liability For Unrecognized Tax Benefits | Liability For Interest and Penalties | Liability Total | |||||||||||||
| Balance, January 1, 2015 | $ | 9,107 | $ | 13,620 | $ | 2,391 | $ | 16,011 | ||||||||
| Additions based on tax positions related to the current year | − | 1,595 | 308 | 1,903 | ||||||||||||
| Additions for tax positions of prior years | 490 | 498 | 1,298 | 1,796 | ||||||||||||
| Reductions for statute of limitation expirations | (1,779 | ) | (2,551 | ) | (865 | ) | (3,416 | ) | ||||||||
| Balance, December 31, 2015 | 7,818 | 13,162 | 3,132 | 16,294 | ||||||||||||
| Additions based on tax positions related to the current year | 1,249 | 1,249 | - | 1,249 | ||||||||||||
| Additions for tax positions of prior years | 481 | 718 | 934 | 1,652 | ||||||||||||
| Reductions for statute of limitation expirations | (1,525 | ) | (2,164 | ) | (729 | ) | (2,893 | ) | ||||||||
| Balance, December 31, 2016 | 8,023 | 12,965 | 3,337 | 16,302 | ||||||||||||
| Additions based on tax positions related to the current year | 1,219 | 1,219 | - | 1,219 | ||||||||||||
| Additions for tax positions of prior years | 342 | 844 | 865 | 1,709 | ||||||||||||
| Reductions for statute of limitation expirations | (1,682 | ) | (2,508 | ) | (927 | ) | (3,435 | ) | ||||||||
| Revaluation due to federal tax reform | (2,854 | ) | - | - | - | |||||||||||
| Balance, December 31, 2017 | $ | 5,048 | $ | 12,520 | $ | 3,275 | $ | 15,795 | ||||||||