SCHEDULE II - VALUATION RESERVES (Details) - USD ($)	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Valuation and Qualifying Accounts [Abstract]
Balance at beginning of year	$ 5,706,000	$ 5,287,000	$ 5,130,000
Provision for Doubtful Accounts	1,414,000	536,000	2,984,000
Valuation Allowances and Reserves, Deductions	(2,593,000)	(117,000)	(2,827,000)
Balance at end of year	$ 4,527,000	$ 5,706,000	$ 5,287,000