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STOCK OPTION ROLLFORWARD (Details 5) - Stock options [Member] - USD ($) $ / shares in Units, $ in Thousands | 12 Months Ended
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Dec. 31, 2016 | Dec. 31, 2015 | Dec. 31, 2014
Stock Option Awards, Outstanding (in shares): |  |  |  |  |
Balance outstanding at beginning of period |  | 121,900 |  |  |
Granted |  | 10,000 |  |  |
Exercised |  | (22,250) |  |  |
Forfeited |  | 0 |  |  |
Expired |  | 0 |  |  |
Balance outstanding at end of period |  | 109,650 | [1] | 121,900 |
Options outstanding and expected to vest at December 31, 2016 | [2] | 109,498 |  |  |
Options exercisable at December 31, 2016 | [3] | 102,984 |  |  |
Weighted Average Exercise Price, Outstanding (in usd per share): |  |  |  |  |
Balance outstanding at beginning of period |  | $ 28.76 |  |  |
Granted |  | 45.69 |  |  |
Exercised |  | 30.58 |  |  |
Forfeited |  | 0.00 |  |  |
Expired |  | 0.00 |  |  |
Balance outstanding at end of period |  | 29.93 |  | $ 28.76 |
Options outstanding and expected to vest at December 31, 2016 |  | 29.91 |  |  |
Options exercisable at December 31, 2016 |  | $ 28.91 |  |  |
Balance at December 31, 2016, Weighted average remaining contractual term (years) |  | 3 years 7 days |  |  |
Options outstanding and expected to vest at December 31, 2016, Weighted Average Remaining Contractual Term (years) |  | 3 years 5 days |  |  |
Options exercisable at December 31, 2016, Weighted Average Remaining Contractual Term (years) |  | 2 years 7 months 8 days |  |  |
Balance at December 31, 2016, Aggregate Intrinsic Value | [4] | $ 4,443 |  |  |
Options outstanding and expected to vest at December 31, 2016, Aggregate Instrinsic Value | [4] | 4,439 |  |  |
Options exercisable at December 31, 2016, Aggregate Intrinsic Value | [4] | $ 4,278 |  |  |
Stock Option Awards, Nonvested (in shares) |  |  |  |  |
Balance nonvested at beginning of period |  | 0 |  |  |
Granted |  | 10,000 |  |  |
Vested |  | (3,334) |  |  |
Forfeited |  | 0 |  |  |
Expired |  | 0 |  |  |
Balance nonvested at end of period |  | 6,666 |  | 0 |
Weighted Average Grant Date Fair Value, Nonvested (in dollars per share): |  |  |  |  |
Balance nonvested at beginning of period |  | $ 0.00 |  |  |
Granted |  | 11.03 |  | $ 0.00 | $ 0.00
Vested |  | 11.03 |  |  |
Forfeited |  | 0.00 |  |  |
Expired |  | 0 |  |  |
Balance nonvested at end of period |  | $ 11.03 |  | $ 0.00 |
Unrecognized compensation cost, including forfeiture estimate |  | $ 37 |  |  |
Weighted average remaining recognition period (years) |  | 1 year 5 days |  |  |
[1] | Inclusive of 34,000 stock options outstanding to Directors.
[2] | Inclusive of 33,848 vested stock options and expected to vest to Directors.
[3] | Inclusive of 27,334 vested stock options outstanding to Directors.
[4] | The aggregate intrinsic value in the preceding tables represents the total pre-tax intrinsic value, based on the average of the high price and low price at which the Company’s common stock traded on December 31, 2016 of $70.45, which would have been received by the option holders had they all exercised their options as of that date.

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- Definition Weighted average period over which unrecognized compensation is expected to be recognized for equity-based compensation plans, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + 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 (i) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition The number of shares into which fully or partially vested stock options outstanding as of the balance sheet date can be currently converted under the 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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