| Years Ended December 31, | | 2017 | | 2016 | | 2015 | | |||
| (in thousands) | | | | | | | | | | |
| | | | | | | | | | | |
| Current: | | | | | | | | | | |
| Federal | | $ | (3,690) | | $ | 4,981 | | $ | 174 | |
| State and local | | | 532 | | | 567 | | | 2 | |
| | | | (3,158) | | | 5,548 | | | 176 | |
| Deferred: | | | | | | | | | | |
| Federal | | | 4,293 | | | 949 | | | 2,460 | |
| State and local | | | (288) | | | 131 | | | 308 | |
| | | | 4,005 | | | 1,080 | | | 2,768 | |
| Expense for income taxes | | $ | 847 | | $ | 6,628 | | $ | 2,944 | |
| Years ended December 31, | | 2017 | | 2016 | | 2015 | | |||
| Income tax rates | | | | | | | | | | |
| - Statutory U.S. federal rate | | | 35 | % | | 35 | % | | 34 | % |
| - State income taxes, net of federal benefit | | | 4 | % | | 3 | % | | 4 | % |
| - Excess tax benefits related to stock compensation | | | (20) | % | | | | | | |
| - Effect of 2017 Tax Act | | | (12) | % | | | | | | |
| Total | | | 7 | % | | 38 | % | | 38 | % |
| December 31, | | 2017 | | 2016 | | ||
| (in thousands) | | | | | | | |
| - Depreciation &; amortization | | $ | (3,665) | | $ | (236) | |
| - Reserves for doubtful accounts | | | 115 | | | 139 | |
| - Inventory reserve | | | 218 | | | 304 | |
| - Non qualified stock options | | | 409 | | | 247 | |
| - Net operating losses | | | 1,450 | | | 2,078 | |
| Total | | $ | (1,473) | | $ | 2,532 | |