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CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY - USD ($) $ in Thousands | Common Stock | Additional Paid-in Capital | Retained Earnings (Deficit) | Accumulated Other Comprehensive (Loss) Income | Total
--- | --- | --- | --- | --- | ---
Balance at beginning of period at Dec. 31, 2015 | $ 227 | $ 150,456 | $ 60,859 | $ (1,824) | $ 209,718
Balance at beginning of period (in shares) at Dec. 31, 2015 | 22,719,498 |  |  |  |
Increase (Decrease) in Stockholders' Equity |  |  |  |  |
Impact of adopting ASUs |  |  | (869) |  | (869)
Net loss |  |  | (38,333) |  | (38,333)
Unrealized gain (loss) on foreign exchange rate translation |  |  |  | 496 |
Income tax benefit (expense) |  |  |  | (268) |
Other comprehensive gain (loss) |  |  |  | 228 | 228
Issuance of common stock under stock compensation plans (in shares) | 20,221 |  |  |  |
Tax deficit recorded to hypothetical APIC pool |  | (77) |  |  | (77)
Stock-based compensation expense |  | 462 |  |  | 462
Issuance of common stock as compensation | $ 1 | 416 |  |  | 417
Issuance of common stock as compensation (in shares) | 66,200 |  |  |  |
Shares exchanged for taxes on stock-based compensation |  | (72) |  |  | (72)
Shares exchanged for taxes on stock-based compensation (in shares) | (10,880) |  |  |  |
Balance at end of period at Dec. 31, 2016 | $ 228 | 151,185 | 21,657 | (1,596) | 171,474
Balance at end of period (in shares) at Dec. 31, 2016 | 22,795,039 |  |  |  |
Increase (Decrease) in Stockholders' Equity |  |  |  |  |
Impact of adopting ASUs |  | 20 | (20) |  |
Net loss |  |  | (31,790) |  | (31,790)
Unrealized gain (loss) on foreign exchange rate translation |  |  |  | 1,091 |
Income tax benefit (expense) |  |  |  | (275) |
Other comprehensive gain (loss) |  |  |  | 816 | 816
Issuance of common stock under stock compensation plans | $ 1 | (1) |  |  |
Issuance of common stock under stock compensation plans (in shares) | 92,448 |  |  |  |
Stock-based compensation expense |  | 656 |  |  | 656
Issuance of common stock as compensation |  | 320 |  |  | 320
Issuance of common stock as compensation (in shares) | 67,498 |  |  |  |
Shares exchanged for taxes on stock-based compensation |  | (158) |  |  | (158)
Shares exchanged for taxes on stock-based compensation (in shares) | (28,180) |  |  |  |
Balance at end of period at Dec. 31, 2017 | $ 229 | 152,022 | (10,153) | (780) | $ 141,318
Balance at end of period (in shares) at Dec. 31, 2017 | 22,926,805 |  |  |  | 22,878,360
Increase (Decrease) in Stockholders' Equity |  |  |  |  |
Impact of adopting ASUs |  |  | 43 | (43) |
Cash in lieu of fractional shares for stock dividend |  |  | (1) |  | $ (1)
Cash in lieu of fractional shares for stock dividend (in shares) | (101) |  |  |  |
Net loss |  |  | (24,407) |  | (24,407)
Unrealized gain (loss) on foreign exchange rate translation |  |  |  | (1,141) |
Other comprehensive gain (loss) |  |  |  | (1,141) | (1,141)
Issuance of common stock under stock compensation plans | $ 1 | (1) |  |  |
Issuance of common stock under stock compensation plans (in shares) | 51,384 |  |  |  |
Stock-based compensation expense |  | 1,037 |  |  | 1,037
Issuance of common stock as compensation |  | 331 |  |  | 331
Issuance of common stock as compensation (in shares) | 59,284 |  |  |  |
Shares exchanged for taxes on stock-based compensation |  | (121) |  |  | (121)
Shares exchanged for taxes on stock-based compensation (in shares) | (18,931) |  |  |  |
Balance at end of period at Dec. 31, 2018 | $ 230 | $ 153,268 | $ (34,518) | $ (1,964) | $ 117,016
Balance at end of period (in shares) at Dec. 31, 2018 | 23,018,441 |  |  |  | 22,969,996

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