SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Share based Comp (Details)		3 Months Ended		9 Months Ended		12 Months Ended
	Aug. 03, 2016 director shares	Sep. 30, 2016 USD ($) $ / shares shares	Sep. 30, 2015 USD ($) shares	Sep. 30, 2016 USD ($) $ / shares shares	Sep. 30, 2015 USD ($) shares	Dec. 31, 2015 USD ($) $ / shares shares	Nov. 30, 2010 shares
Stock Options
Options
Balance at the beginning of the period(in shares)				139,750
Granted (in shares)		0	0	0	0
Exercised (in shares)		0	0	(1,507)
Cancelled (in shares)				(59,493)
Balance at the end of the period (in shares)		78,750		78,750		139,750
Exercisable at the end of the period (in shares)		78,750		78,750
Weighted-Average Exercise Price Per Share
Outstanding at the beginning of the period (in dollars per share) | $ / shares				$ 6.66
Exercised (in dollars per share) | $ / shares				3.20
Cancelled (in dollars per share) | $ / shares				7.18
Outstanding at the end of the period (in dollars per share) | $ / shares		$ 6.33		6.33		$ 6.66
Exercisable at the end of the period (in dollars per share) | $ / shares		$ 6.33		$ 6.33
Weighted-Average Remaining Contractual Term
Outstanding at the end of the period				2 years 2 months 9 days
Exercisable at the end of the period				2 years 2 months 9 days
Aggregate Intrinsic Value
Outstanding at the end of the period | $		$ 8,000		$ 8,000
Exercisable at the end of the period | $		8,000		8,000
Additional disclosures
Intrinsic value of options exercised | $				1,000	$ 8,000
Cash received from options exercised | $				5,000	11,000
Compensation expense | $		0	$ 2,000	1,000	$ 1,000
Unrecognized compensation related to unvested awards | $		$ 0		$ 0
Equity Appreciation Rights Plan
Awards exercised (in shares)		0	0	1,507
Granted (in shares)		0	0	0	0
Profit (Loss) Per Common Share:
Weighted average common stock equivalents from assumed exercise of stock options (in shares)		14,500
Outstanding options excluded from computation of earnings per share as effect would be antidilutive (in shares)		64,250
Equity Appreciation Rights Plan
Equity Appreciation Rights Plan
Vesting period from the base date	3 years
Shares granted (in units)	5,000	0		0
Number of directors | director	2
Equity Appreciation Rights Plan | Two directors
Equity Appreciation Rights Plan
Shares granted on prorated basis (in units)	3,333
2010 Plan | Equity Appreciation Rights Plan
Additional disclosures
Compensation expense | $		$ 12,000	$ (37,000)	$ 6,000	$ (95,000)
Equity Appreciation Rights Plan
Number of common shares authorized							1,000,000
Vesting period from the base date				3 years
Redemption cash payment period				90 days
Accrued compensation | $		87,000		$ 87,000		$ 143,000
2010 Plan | Equity Appreciation Rights Plan | other accrued liabilities
Equity Appreciation Rights Plan
Accrued compensation | $		54,000		54,000		61,000
2010 Plan | Equity Appreciation Rights Plan | other long-term liabilities
Equity Appreciation Rights Plan
Accrued compensation | $		$ 33,000		$ 33,000		$ 82,000