SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Antidilution (Details) - shares shares in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Anti-dilutive common shares not included for computation of earnings per share
Anti-dilutive potential shares excluded from the computation of diluted weighted average shares outstanding (in shares)	2		61
Basic weighted-average common shares outstanding	16,022	15,898	15,704
Stock options (in shares)	120	115	113
Diluted weighted-average common shares outstanding	16,142	16,013	15,817
Stock options
Anti-dilutive common shares not included for computation of earnings per share
Anti-dilutive potential shares excluded from the computation of diluted weighted average shares outstanding (in shares)	2		61