| Year Ended March 31, | ||||||||||||
| 2017 | 2016 | 2015 | ||||||||||
| Domestic | $ | 12,913 | $ | 14,427 | $ | 14,896 | ||||||
| Foreign | 1,383 | 1,128 | 451 | |||||||||
| $ | 14,296 | $ | 15,555 | $ | 15,347 | |||||||
| Year Ended March 31, | ||||||||||||
| 2017 | 2016 | 2015 | ||||||||||
| Current tax provision | ||||||||||||
| Federal | $ | 2,282 | $ | 3,666 | $ | 4,186 | ||||||
| State | 510 | 627 | 1,135 | |||||||||
| Foreign | 849 | 658 | 212 | |||||||||
3,641 | 4,951 | 5,533 | ||||||||||
| Deferred tax provision: | ||||||||||||
| Federal | (126 | ) | (189 | ) | 252 | |||||||
| State | (32 | ) | (138 | ) | 51 | |||||||
| Foreign | (370 | ) | (238 | ) | (72 | ) | ||||||
(528 | ) | (565 | ) | 231 | ||||||||
| $ | 3,113 | $ | 4,386 | $ | 5,764 | |||||||
| March 31, | ||||||||
| 201 7 | 201 6 | |||||||
| Current deferred tax assets: | ||||||||
| Accrued employee-related expenses | $ | 242 | $ | 257 | ||||
| Allowances and reserves | 132 | 217 | ||||||
| Stock option deductible differences | 898 | 606 | ||||||
| Inventory | 691 | 533 | ||||||
| Currency translation adjustment | -- | 12 | ||||||
| Net operating loss | -- | 110 | ||||||
| Other | 9 | 3 | ||||||
1,972 | 1,738 | |||||||
| Long-term deferred tax liability: | ||||||||
| Property, plant and equipment | (1,635 | ) | (1,599 | ) | ||||
| Goodwill and intangible assets | (3,807 | ) | (4,335 | ) | ||||
| Currency translation adjustment | (3 | ) | -- | |||||
| Other | (81 | ) | (5 | ) | ||||
(5,526 | ) | (5,939 | ) | |||||
| Net deferred tax liability | $ | (3,554 | ) | $ | (4,201 | ) | ||
| Year Ended March 31, | ||||||||||||
| 2017 | 2016 | 2015 | ||||||||||
| Federal income taxes at statutory rates | $ | 4,861 | $ | 5,445 | $ | 5,374 | ||||||
| State income taxes, net of federal benefit | 302 | 293 | 860 | |||||||||
| Tax benefit of stock option exercises | (1,576 | ) | (751 | ) | 209 | |||||||
| Section 199 manufacturing deduction | (304 | ) | (440 | ) | (317 | ) | ||||||
| Research and development credit | (385 | ) | (345 | ) | (248 | ) | ||||||
| Other | 215 | 184 | (114 | ) | ||||||||
| $ | 3,113 | $ | 4,386 | $ | 5,764 | |||||||
| Year Ended March 31, | ||||||||||||
| 2017 | 2016 | 2015 | ||||||||||
| Beginning balance | $ | 221 | $ | -- | $ | -- | ||||||
| Increases related to current period tax positions | 110 | 221 | -- | |||||||||
| Ending balance | $ | 331 | $ | 221 | $ | -- | ||||||