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Consolidated Statements of Shareholders' Equity - USD ($) $ in Thousands | Preferred Stock [Member] | Common Stock | Paid-in Capital in Excess of par | Retained Earnings | Accumulated Other Comprehensive Income | Total
--- | --- | --- | --- | --- | --- | ---
Balances at Dec. 31, 2014 |  | $ 83 | $ 42,076 | $ 174,489 |  | $ 216,648
Balances (in shares) at Dec. 31, 2014 |  | 8,346,000 |  |  |  |
Increase (Decrease) in Shareholders' Equity |  |  |  |  |  |
Net income |  |  |  | 6,460 |  | 6,460
Net unrealized gain from derivative instruments, net of tax expense |  |  |  |  | $ (521) | (521)
Shares repurchased |  | $ (9) | (16,491) |  |  | (16,500)
Shares repurchased (in shares) |  | (912,000) |  |  |  |
Shares issued under stock compensation plans |  | $ 2 | 516 |  |  | 518
Shares issued under stock compensation plans (in shares) |  | 205,000 |  |  |  |
Cancellation of restricted stock units in satisfaction of withholding tax |  | $ (1) | (1,557) |  |  | (1,558)
Cancellation of restricted stock units in satisfaction of withholding tax (in shares) |  | (91,000) |  |  |  |
Stock-based compensation, net of forfeitures |  |  | 4,150 |  |  | 4,150
Tax benefit on disqualified disposition of shares |  |  | 26 |  |  | 26
Balances at Dec. 31, 2015 |  | $ 75 | 28,720 | 180,949 | (521) | 209,223
Balances (in shares) at Dec. 31, 2015 |  | 7,548,000 |  |  |  |
Increase (Decrease) in Shareholders' Equity |  |  |  |  |  |
Net income |  |  |  | 14,069 |  | 14,069
Net unrealized loss from currency translation adjustment, net of tax benefit |  |  |  |  | (568) | (568)
Net unrealized gain from derivative instruments, net of tax expense |  |  |  |  | 44 | 44
Shares repurchased |  | $ (12) | (28,946) |  |  | (28,958)
Shares repurchased (in shares) |  | (1,212,000) |  |  |  |
Shares issued under stock compensation plans |  | $ 1 | 154 |  |  | 155
Shares issued under stock compensation plans (in shares) |  | 127,000 |  |  |  |
Cancellation of restricted stock units in satisfaction of withholding tax |  |  | (1,369) |  |  | (1,369)
Cancellation of restricted stock units in satisfaction of withholding tax (in shares) |  | (61,000) |  |  |  |
Stock-based compensation, net of forfeitures |  |  | 3,717 |  |  | 3,717
Issuance of preferred stock | $ 19,752 |  |  |  |  |
Accretion of preferred stock issuance costs | 8 |  |  | (8) |  | (8)
Preferred stock dividends paid |  |  |  | (281) |  | (281)
Tax benefit on disqualified disposition of shares |  |  | 236 |  |  | 236
Balances at Dec. 31, 2016 | $ 19,760 | $ 64 | 2,512 | 194,729 | (1,045) | $ 196,260
Balances (in shares) at Dec. 31, 2016 | 1,000,000 | 6,402,000 |  |  |  |
Increase (Decrease) in Shareholders' Equity |  |  |  |  |  |
Issuance of preferred stock (in shares) | 1,000,000 |  |  |  |  | 1,000
Net income |  |  |  | 62,158 |  | $ 62,158
Net unrealized loss from currency translation adjustment, net of tax benefit |  |  |  |  | 584 | 584
Net unrealized gain from derivative instruments, net of tax expense |  |  |  |  | 687 | 687
Shares repurchased |  | $ (2) | (3,544) |  |  | (3,546)
Shares repurchased (in shares) |  | (155,000) |  |  |  |
Shares issued under stock compensation plans |  | $ 2 | 175 |  |  | 177
Shares issued under stock compensation plans (in shares) |  | 216,000 |  |  |  |
Cancellation of restricted stock units in satisfaction of withholding tax |  |  | (1,094) |  |  | (1,094)
Cancellation of restricted stock units in satisfaction of withholding tax (in shares) |  | (44,000) |  |  |  |
Stock-based compensation, net of forfeitures |  |  | 4,270 |  |  | 4,270
Issuance of preferred stock | $ 29,665 |  |  |  |  |
Accretion of preferred stock issuance costs | 46 |  |  | (46) |  | (46)
Preferred stock dividends paid |  |  |  | (1,813) |  | (1,813)
Other |  |  |  | 1,273 |  | 1,273
Balances at Dec. 31, 2017 | $ 49,471 | $ 64 | $ 2,319 | $ 256,301 | $ 226 | $ 258,910
Balances (in shares) at Dec. 31, 2017 | 2,500,000 | 6,419,000 |  |  |  |
Increase (Decrease) in Shareholders' Equity |  |  |  |  |  |
Issuance of preferred stock (in shares) | 1,500,000 |  |  |  |  | 2,500

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- Definition Number of shares of stock issued as of the balance sheet date, including shares that had been issued and were previously outstanding but which are now held in the treasury. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21463-112644 + Details
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- Definition Number of shares that have been repurchased during the period and have not been retired and are not held in treasury. Some state laws may govern the circumstances under which an entity may acquire its own stock and prescribe the accounting treatment therefore. This element is used when state law does not recognize treasury stock. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(28)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.3-04) -URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(29)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21463-112644 + Details
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- Definition The number of securities classified as temporary equity that have been sold (or granted) to the entity's shareholders. Securities issued include securities outstanding and securities held in treasury. Temporary equity is a security with redemption features that are outside the control of the issuer, is not classified as an asset or liability in conformity with GAAP, and is not mandatorily redeemable. Includes any type of security that is redeemable at a fixed or determinable price or on a fixed or determinable date or dates, is redeemable at the option of the holder, or has conditions for redemption which are not solely within the control of the issuer. If convertible, the issuer does not control the actions or events necessary to issue the maximum number of shares that could be required to be delivered under the conversion option if the holder exercises the option to convert the stock to another class of equity. If the security is a warrant or a rights issue, the warrant or rights issue is considered to be temporary equity if the issuer cannot demonstrate that it would be able to deliver upon the exercise of the option by the holder in all cases. Includes stock with put option held by ESOP and stock redeemable by holder only in the event of a change in control of the issuer. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(27)(b)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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