LONG-TERM DEBT (Details) (USD $)	6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Nov. 15, 2011
Maturities of Borrowings Under New Credit Facility
2016	$ 48,900,000
Total	48,900,000
Line of Credit [Member]
Long-term debt
Maximum borrowing capacity	92,500,000		60,000,000
Reduction in maximum borrowing capacity		1,500,000
Multiple which may be used to permanently reduce the maximum borrowing capacity under the credit facility	50,000
Maturities of Borrowings Under New Credit Facility
Variable interest rate base	LIBOR
Percentage points added to the reference rate	1.50%
One-month LIBOR interest rate (as a percent)	0.15%
Outstanding amount	48,900,000
Line of Credit [Member] | Scenario, Actual [Member]
Long-term debt
Leverage ratio	1.12
Fixed charge coverage ratio	27.05
Line of Credit [Member] | Minimum [Member]
Long-term debt
Amount in which the maximum borrowing capacity may be permanently reduced	$ 500,000
Line of Credit [Member] | Minimum [Member] | Scenario Covenant Requirement [Member]
Long-term debt
Fixed charge coverage ratio	1.15
Line of Credit [Member] | Maximum [Member] | Scenario Covenant Requirement [Member]
Long-term debt
Leverage ratio	2.5