OTHER COMMITMENTS, CONTINGENCIES, AND OFF-BALANCE SHEET ACTIVITIES (Details 2) (USD $)	12 Months Ended
	Dec. 31, 2014 item	Dec. 31, 2013	Dec. 31, 2012
OTHER COMMITMENTS, CONTINGENCIES, AND OFF-BALANCE SHEET ACTIVITIES
Employment agreement term	3 years
Number of senior executives which entered into an employment agreement with the Company	1
Future minimum rental payments
2015	$ 7,200,000
2016	5,100,000
2017	4,400,000
2018	3,600,000
2019	2,800,000
Thereafter	27,000,000
Extendable term	20 years
Total rent expense	7,200,000	5,700,000	4,700,000
Lease Obligations
2015	751,000
2016	715,000
2017	680,000
2018	647,000
2019	646,000
Thereafter	6,800,000
Future obligations required under the financing lease
2015	80,000
2016	80,000
2017	81,000
2018	86,000
2019	86,000
Thereafter	$ 1,700,000