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Debt (Details) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014	Dec. 31, 2014	Mar. 31, 2009
Debt, Long-term and Short-term, Combined Amount [Abstract]
Debt	$ 15,821,000		$ 15,821,000		$ 5,196,000
Revolving Line of Credit	0		0		2,768,000
Less current portion	(4,571,000)		(4,571,000)		(4,482,000)
Long-term debt	$ 11,250,000		$ 11,250,000		714,000
Percent of subsidiary stock not security for financing	65.00%		65.00%
Document Fiscal Year Focus			2015
Capex Loan Swap Agreement [Member]
Debt, Long-term and Short-term, Combined Amount [Abstract]
Derivative, Fixed Interest Rate	2.295%		2.295%
Derivative, Description of Variable Rate Basis			LIBOR
Description of Reclassification of Cash Flow Hedge Gain (Loss)			The pre-tax loss previously recognized in Accumulated Other Comprehensive Income, totaling $146,000 as of March 31, 2009, is being amortized as an increase to interest expense of approximately $2,000 per month, or $1,000 net of tax, over the remaining term of the interest rate swap agreement.
Derivative, Variable Interest Rate	0.00%		0.00%
Interest rate swaps	$ 16,000		$ 16,000		37,000
Interest income (loss) for mark-to-market adjustment of swap fair value	9,000	$ 17,000	21,000	$ 35,000
Derivative, Notional Amount	1,571,000		1,571,000		2,428,000
Interest expense for settlements related to swaps	(9,000)	$ (20,000)	(20,000)	(41,000)
Capex Loan Swap Agreement [Member] | Accumulated Other-than-Temporary Impairment [Member]
Debt, Long-term and Short-term, Combined Amount [Abstract]
Pre-Tax Loss						$ 146,000
Amortization of Pre-Tax Loss to Interest Expense, Before Tax, Monthly			2,000
Amortization of Pre-Tax Loss to Interest Expense, Net of Tax, Monthly			1,000
Revolving Credit Facility [Member]
Debt, Long-term and Short-term, Combined Amount [Abstract]
Revolving Line of Credit	$ 0		$ 0		$ 2,768,000
Debt Instrument, Interest Rate, Stated Percentage	1.75%		1.75%		1.75%
Maximum borrowing capacity	$ 18,000,000		$ 18,000,000
Debt Instrument, Basis Spread on Variable Rate			1.60%
Term Loan [Member]
Debt, Long-term and Short-term, Combined Amount [Abstract]
Debt	$ 14,250,000		$ 14,250,000		$ 0
Debt Instrument, Interest Rate, Stated Percentage	1.98%		1.98%
Proceeds from (Repayments of) Debt			$ 15,500,000	0
Repayments of Short-term Debt	$ 500,000		$ 1,250,000	$ 0
Capex Loan [Member]
Debt, Long-term and Short-term, Combined Amount [Abstract]
Debt					$ 2,428,000
Debt Instrument, Interest Rate, Stated Percentage	1.75%		1.75%		1.76%
Debt - face amount	$ 12,000,000		$ 12,000,000
Mexican Loan [Member]
Debt, Long-term and Short-term, Combined Amount [Abstract]
Debt - face amount	$ 8,000,000		$ 8,000,000

X

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