GUARANTOR - Condensed Cash Flow (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
OPERATING ACTIVITIES:
Net Cash Provided By Used In Operating Activities	$ 64,790	$ 65,296	$ 63,349
INVESTING ACTIVITIES:
Additions to property and equipment	(7,043)	(8,408)	(4,325)
Deferred charges and other assets	$ (1,575)	(800)	(475)
Proceeds (distributions) from investments in subsidiaries
Net cash provided by (used in) investing activities	$ (91,744)	(7,055)	(4,583)
FINANCING ACTIVITIES:
Payments of long-term debt	(51,250)	(53,000)	(86,023)
Proceeds from the exercise of stock options	35	82	245
Payment of dividend equivalents on vested restricted stock units	(7)	0	0
NetCashProvidedByUsedInFinancingActivities	4,583	(38,932)	(55,458)
NET INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS	(22,371)	19,309	3,308
CASH AND CASH EQUIVALENTS, BEGINNING OF YEAR	31,540	12,231	8,923
CASH AND CASH EQUIVALENTS, END OF PERIOD	9,169	31,540	12,231
Payments of Dividends, Common Stock	413	0	0
Payments Of Stock Issuance Cost	220	0	0
Parent Company [Member]
OPERATING ACTIVITIES:
Net Cash Provided By Used In Operating Activities	(25,355)	(21,652)	(18,167)
INVESTING ACTIVITIES:
Additions to property and equipment	(304)	(213)	(146)
Deferred charges and other assets	(1,142)	(481)	(468)
Proceeds (distributions) from investments in subsidiaries	29,030	23,610	20,208
Net cash provided by (used in) investing activities	27,584	22,916	19,594
FINANCING ACTIVITIES:
Proceeds from the exercise of stock options	35	82	245
Purchase of vested restricted stock units	1,562	1,514	1,640
Payment of dividend equivalents on vested restricted stock units	(7)	0	0
NetCashProvidedByUsedInFinancingActivities	(2,167)	(1,432)	(1,395)
NET INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS	62	(168)	32
CASH AND CASH EQUIVALENTS, BEGINNING OF YEAR	133	301	269
CASH AND CASH EQUIVALENTS, END OF PERIOD	195	133	301
Payments of Dividends, Common Stock	(413)	0	0
Payments Of Stock Issuance Cost	$ (220)	$ 0	$ 0