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Stockholders' Equity | 12 Months Ended
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Dec. 31, 2017
Stockholders' Equity Attributable to Parent [Abstract] |
Treasury Stock [Text Block] | Stockholders' Equity Treasury Stock In July 2010, our Board of Directors approved a common stock purchase plan to purchase up to $40.0 million of our common stock. This plan has no expiration date and we have $7.2 million remaining on this purchase plan. During 2016, we purchased $15.4 million of our common stock. We did not purchase any of our common stock under our purchase plan in 2017 or 2015. We used the treasury stock to issue shares for stock option exercises, restricted stock grants and employee stock purchase plan stock purchases. We are currently limited on share purchases in accordance with the terms and conditions of our Credit Facility, (see Note 12: Long-Term Obligations). In 2017, we withheld 27,636 shares of our common stock from employee vested restricted stock units in consideration for $4.1 million in payments for the employee's share award income tax withholding obligations. We have no shares remaining in treasury at December 31, 2017. In 2016, we withheld 20,261 shares of our common stock from employee vested restricted stock units in consideration for $1.9 million in payments for the employee's share award income tax withholding obligations. We had 93 shares remaining in treasury at December 31, 2016. Accumulated Other Comprehensive Income (Loss) The components of AOCI, net of tax, were as follows (in thousands):
|  | Foreign Currency Translation Adjustments |  | Unrealized Gains on Cash Flow Hedges |  | Other Adjustments |  | Total
Balance as of December 31, 2016 |  | $ | (21,272 | ) |  | $ | — |  |  | $ | — |  |  | $ | (21,272 | )
Other comprehensive income (loss) before reclassifications |  | 6,694 |  |  | 184 |  |  | (16 | ) |  | 6,862 |
Amounts reclassified from AOCI |  | — |  |  | (549 | ) |  | — |  |  | (549 | )
Other comprehensive income (loss) |  | 6,694 |  |  | (365 | ) |  | (16 | ) |  | 6,313 |
Balance as of December 31, 2017 |  | $ | (14,578 | ) |  | $ | (365 | ) |  | $ | (16 | ) |  | $ | (14,959 | )

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- Definition The entire disclosure for shareholders' equity comprised of portions attributable to the parent entity and noncontrolling interest, including other comprehensive income. Includes, but is not limited to, balances of common stock, preferred stock, additional paid-in capital, other capital and retained earnings, accumulated balance for each classification of other comprehensive income and amount of comprehensive income. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -URI http://asc.fasb.org/topic&trid=2208762 + Details
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