SHAREHOLDER'S EQUITY (Details) - USD ($)	1 Months Ended			3 Months Ended					9 Months Ended	12 Months Ended
	Dec. 15, 2016	Sep. 15, 2016	Jun. 15, 2016	Oct. 16, 2016	Jul. 16, 2016	Apr. 16, 2016	Jan. 16, 2016	Oct. 16, 2015	Oct. 01, 2017	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Conversion Of Class B Common Stock [Abstract]
Conversion of Class B common stock to Class A common stock (Share)									3,152,333
Dividends And Shares Activitiy [Line Items]
Dvidend Equivalent liability - short term										$ 260,000	$ 0
Dvidend Equivalent liability - long term										348,000	210,000
Total Dividend Equivalent Liability										$ 608,000	210,000
CommonStockDividendsPerShareDeclared	$ 0.075	$ 0.075	$ 0.075							$ 0.3
Dividend payments	$ 2,891,608	$ 2,886,179	$ 2,885,838							$ 8,666,000	$ 0	$ 0
Shares of stock deemed repurchased										232,000	132,000	142,000
Amount recorded as financing activity										$ (2,268,000)	$ (1,562,000)	$ (1,514,000)
The total cost to repurchase										0	0	0
Credit Facility Available For Dividend Equity Or Debt Repurchase										60,000,000
Dividends paid on preferred stock				$ 550,000	$ 412,500	$ 412,500	$ 412,500	$ 412,500		$ 1,788,000	$ 752,000	0
Dividends Payable Amount Per Share											$ 37,500
Employee stock purchase plan, authorized shares										1,000,000
Stock Issued During Period Value Employee Stock Purchase Plan										$ 379,000	$ 0	0
Total Non cash compensation expense recognized										$ 4,218,000	3,488,000	3,730,000
Espp Shares Market Value										85.00%
Espp Share Discount										15.00%
PreferredStockDividendsPerShareDeclared				$ 50,000	$ 37,500	$ 37,500	$ 37,500	$ 37,500
PaymentsOfDividendsAbstract
Payments of Dividends, Common Stock	$ 2,891,608	$ 2,886,179	$ 2,885,838							$ 8,666,000	0	0
PaymentsOfDividendsPreferredStockAndPreferenceStock										$ 1,788,000	$ 413,000	$ 0
ESPP [Member]
Dividends And Shares Activitiy [Line Items]
Stock Issued During Period Shares Employee Stock Purchase Plans										32,000	0	0
Total Non cash compensation expense recognized										$ 67,000	$ 0	$ 0