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STOCK-BASED COMPENSATION, Stock Options Outstanding And Exercisable (Details) - USD ($) | 12 Months Ended
--- | ---
Dec. 31, 2015 | Dec. 31, 2014 | Dec. 31, 2013
Outstanding and Exercisable [Abstract] |  |  |
Number of Options Outstanding at December 31 (in shares) | 16,500 |  |
Weighted Average Remaining Contractual Life (Years) | 10 months 17 days |  |
Aggregate Intrinsic Value | $ 654,000 |  |
Lower range limit (in dollars per share) | $ 10.04 |  |
Upper range limit (in dollars per share) | $ 18.34 |  |
Stock-based compensation, aggregate disclosures [Abstract] |  |  |
Shares tendered to net share settle (in shares) | 13,959 | 0 | 20,768
Fair value of shares withheld for tax withholding obligations | $ 5,337,000 | $ 2,844,000 |
$10.04–$12.70 [Member] |  |  |
Outstanding and Exercisable [Abstract] |  |  |
Number of Options Outstanding at December 31 (in shares) | 1,750 |  |
Weighted Average Remaining Contractual Life (Years) | 1 year 6 months |  |
Weighted Average Exercise Price | $ 11.78 |  |
Aggregate Intrinsic Value | $ 75,000 |  |
Lower range limit (in dollars per share) | $ 10.04 |  |
Upper range limit (in dollars per share) | $ 12.7 |  |
$14.16-$14.39 [Member] |  |  |
Outstanding and Exercisable [Abstract] |  |  |
Number of Options Outstanding at December 31 (in shares) | 10,500 |  |
Weighted Average Remaining Contractual Life (Years) | 3 months 18 days |  |
Weighted Average Exercise Price | $ 14.38 |  |
Aggregate Intrinsic Value | $ 421,000 |  |
Lower range limit (in dollars per share) | $ 14.16 |  |
Upper range limit (in dollars per share) | $ 14.39 |  |
$15.22–$18.34 [Member] |  |  |
Outstanding and Exercisable [Abstract] |  |  |
Number of Options Outstanding at December 31 (in shares) | 4,250 |  |
Weighted Average Remaining Contractual Life (Years) | 1 year 6 months |  |
Weighted Average Exercise Price | $ 17.21 |  |
Aggregate Intrinsic Value | $ 158,000 |  |
Lower range limit (in dollars per share) | $ 15.22 |  |
Upper range limit (in dollars per share) | 18.34 |  |
Stock Options [Member] |  |  |
Outstanding and Exercisable [Abstract] |  |  |
Weighted Average Exercise Price | $ 14.83 |  |
Stock-based compensation, aggregate disclosures [Abstract] |  |  |
Total intrinsic value of stock awards exercised | $ 12,000,000 | 3,700,000 | $ 4,900,000
Compensation expense | 0 | 0 | 0
Value of shares tendered to net share settle exercise of options | $ 429,100 | $ 0 | $ 1,000,000
Shares withheld for tax withholding obligations (in shares) | 30,186 | 0 | 7,599
Fair value of shares withheld for tax withholding obligations | $ 1,299,808 | $ 0 | $ 274,000

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- Definition The weighted-average price as of the balance sheet date at which grantees can acquire the shares reserved for issuance on vested portions of options outstanding and currently exercisable under the stock option plan. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1)(iii) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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