SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Basis of Presentation (Details)	12 Months Ended
	Dec. 31, 2014 segments	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Common stock, shares issued (in shares)	16,986,493	16,150,794
Common stock outstanding (in shares)	16,254,153	15,887,649
Number of reportable segments	5
Prior Period Adjustment [Member]
Common stock, shares issued (in shares)		468,048	555,224	466,852
Common stock outstanding (in shares)		468,048	555,224	466,852