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Condensed Consolidated Statements of Redeemable Preferred Stock and Shareholders' Equity - USD ($) $ in Thousands | Total | Redeemable Preferred Stock | Common Stock | Paid in Capital in Excess of Par | Retained Earnings | Accumulated Other Comprehensive Income (Loss)
--- | --- | --- | --- | --- | --- | ---
Balances, beginning of period (in shares) at Dec. 31, 2017 |  | 2,500,000 | 6,419,000 |  |  |
Balances, beginning of period at Dec. 31, 2017 | $ 258,910 | $ 49,471 | $ 64 | $ 2,319 | $ 256,301 | $ 226
Net income | 25,117 |  |  |  | 25,117 |
Net unrealized (loss) gain from currency translation adjustment, net of tax benefit (expense) | (590) |  |  |  |  | (590)
Net unrealized (loss) gain from derivative instruments, net of tax benefit (expense) | 1,267 |  |  |  |  | 1,267
Shares repurchased (in shares) |  |  | (425,000) |  |  |
Shares repurchased | (14,567) |  | $ (4) | (5,361) | (9,202) |
Shares issued under stock compensation plans (in shares) |  |  | 278,000 |  |  |
Shares issued under stock compensation plans | 292 |  | $ 2 | 290 |  |
Cancellation of restricted stock in satisfaction of withholding tax (in shares) |  |  | (42,000) |  |  |
Cancellation of restricted stock in satisfaction of withholding tax | (1,252) |  | $ 0 | (1,252) |  |
Stock-based compensation expense | 4,004 |  |  | 4,004 |  |
Accretion of preferred shares issuance costs | (62) | $ 62 |  |  | (62) |
Preferred stock dividends | (2,431) |  |  |  | (2,431) |
Balances, end of period (in shares) at Sep. 30, 2018 |  | 2,500,000 | 6,230,000 |  |  |
Balances, end of period at Sep. 30, 2018 | 270,688 | $ 49,533 | $ 62 | 0 | 269,664 | 962
Balances, beginning of period (in shares) at Jun. 30, 2018 |  | 2,500,000 | 6,365,000 |  |  |
Balances, beginning of period at Jun. 30, 2018 | 265,287 | $ 49,512 | $ 64 | 1,474 | 262,548 | 1,201
Net income | 9,674 |  |  |  | 9,674 |
Net unrealized (loss) gain from currency translation adjustment, net of tax benefit (expense) | (411) |  |  |  |  | (411)
Net unrealized (loss) gain from derivative instruments, net of tax benefit (expense) | 172 |  |  |  |  | 172
Shares repurchased (in shares) |  |  | (128,000) |  |  |
Shares repurchased | (4,383) |  | $ (1) | (2,664) | (1,718) |
Shares issued under stock compensation plans (in shares) |  |  | 6,000 |  |  |
Shares issued under stock compensation plans | 174 |  | $ (1) | 175 |  |
Cancellation of restricted stock in satisfaction of withholding tax (in shares) |  |  | (13,000) |  |  |
Cancellation of restricted stock in satisfaction of withholding tax | (404) |  |  | (404) |  |
Stock-based compensation expense | 1,419 |  |  | 1,419 |  |
Accretion of preferred shares issuance costs | (21) | $ 21 |  |  | (21) |
Preferred stock dividends | (819) |  |  |  | (819) |
Balances, end of period (in shares) at Sep. 30, 2018 |  | 2,500,000 | 6,230,000 |  |  |
Balances, end of period at Sep. 30, 2018 | 270,688 | $ 49,533 | $ 62 | 0 | 269,664 | 962
Balances, beginning of period (in shares) at Dec. 31, 2018 |  | 2,500,000 | 6,176,000 |  |  |
Balances, beginning of period at Dec. 31, 2018 | 286,787 | $ 49,554 | $ 62 | 0 | 286,623 | 102
Net income | 61,926 |  |  |  | 61,926 |
Net unrealized (loss) gain from currency translation adjustment, net of tax benefit (expense) | (378) |  |  |  |  | (378)
Net unrealized (loss) gain from derivative instruments, net of tax benefit (expense) | (1,477) |  |  |  |  | (1,477)
Shares repurchased (in shares) |  |  | (72,324) |  |  |
Shares repurchased | (3,567) |  | $ (1) | (2,087) | (1,479) |
Shares issued under stock compensation plans (in shares) |  |  | 290,000 |  |  |
Shares issued under stock compensation plans | 335 |  | $ 3 | 332 |  |
Cancellation of restricted stock in satisfaction of withholding tax (in shares) |  |  | (37,000) |  |  |
Cancellation of restricted stock in satisfaction of withholding tax | (1,460) |  |  | (1,460) |  |
Stock-based compensation expense | 5,588 |  |  | 5,588 |  |
Accretion of preferred shares issuance costs | (63) | $ 63 |  |  | (63) |
Preferred stock dividends | (2,431) |  |  |  | (2,431) |
Balances, end of period (in shares) at Sep. 30, 2019 |  | 2,500,000 | 6,357,000 |  |  |
Balances, end of period at Sep. 30, 2019 | 345,493 | $ 49,617 | $ 64 | 2,373 | 344,809 | (1,753)
Balances, beginning of period (in shares) at Jun. 30, 2019 |  | 2,500,000 | 6,350,000 |  |  |
Balances, beginning of period at Jun. 30, 2019 | 320,413 | $ 49,596 | $ 64 | 0 | 321,577 | (1,228)
Net income | 24,073 |  |  |  | 24,073 |
Net unrealized (loss) gain from currency translation adjustment, net of tax benefit (expense) | (352) |  |  |  |  | (352)
Net unrealized (loss) gain from derivative instruments, net of tax benefit (expense) | (173) |  |  |  |  | (173)
Shares issued under stock compensation plans (in shares) |  |  | 7,000 |  |  |
Shares issued under stock compensation plans | 172 |  | $ 0 | 172 |  |
Stock-based compensation expense | 2,201 |  |  | 2,201 |  |
Accretion of preferred shares issuance costs | (21) | $ 21 |  |  | (21) |
Preferred stock dividends | (820) |  |  |  | (820) |
Balances, end of period (in shares) at Sep. 30, 2019 |  | 2,500,000 | 6,357,000 |  |  |
Balances, end of period at Sep. 30, 2019 | $ 345,493 | $ 49,617 | $ 64 | $ 2,373 | $ 344,809 | $ (1,753)

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