Note 6 - Financial Instruments and Fair Value (Tables)

6 Months Ended

Jun. 30, 2014

Fair Value Disclosures [Abstract]

Fair Value, Assets Measured on Recurring Basis [Table Text Block]

	At June 30, 2014						At December 31, 2013
	Level 1 Inputs		Level 2 Inputs		Level 3 Inputs		Level 1 Inputs		Level 2 Inputs		Level 3 Inputs
Investment in auction rate securities	$	—	$	—	$	6,812	$	—	$	—	$	6,628

Schedule of Available-for-sale Securities Reconciliation [Table Text Block]

	Cost Basis Amount		Gross Unrealized (Gain) Loss In Accumulated OCI		Fair Value
June 30, 2014
Investment in auction rate securities	$	7,425	$	613	$	6,812
December 31, 2013
Investment in auction rate securities	$	7,575	$	947	$	6,628

Schedule of Derivative Instruments [Table Text Block]

Agreement	Notional Amount		Fixed Interest Rate			Underlying Rate	Expiration Date	Fair Value
Interest Rate Swap	$	1,789		5.075	%	3 month LIBOR	July 1, 2015	$	(39	)
Interest Rate Swap		3,696		5.075	%	3 month LIBOR	July 1, 2015		(80	)
Interest Rate Swap		6,388		5.39	%	1 month LIBOR	December 31, 2014		(69	)
Interest Rate Swap		1,235		5.39	%	1 month LIBOR	December 31, 2014		(13	)
Interest Rate Swap		2,198		5.39	%	1 month LIBOR	December 31, 2014		(24	)
Interest Rate Swap		4,974		5.39	%	1 month LIBOR	December 31, 2014		(53	)
Interest Rate Swap		4,680		5.38	%	1 month LIBOR	June 29, 2015		(108	)
Interest Rate Swap		704		5.29	%	1 month LIBOR	June 30, 2015		(16	)
Interest Rate Swap		1,349		5.29	%	1 month LIBOR	June 30, 2015		(31	)
Interest Rate Swap		6,805		5.29	%	1 month LIBOR	June 30, 2015		(154	)
Interest Rate Swap		587		5.29	%	1 month LIBOR	June 30, 2015		(13	)
Interest Rate Swap		2,358		5.29	%	1 month LIBOR	June 30, 2015		(53	)

Schedule of Derivative Instruments in Statement of Financial Position, Fair Value [Table Text Block]

		Fair Value at
Derivative Liabilities Designated as Hedging Instruments	Balance Sheet Location	June 30, 2014		December 31, 2013
Interest Rate Swaps	Other Long-Term Liabilities	$	653	$	1,024

Schedule of Derivative Instruments, Effect on Other Comprehensive Income (Loss) [Table Text Block]

(in thousands)	Gain (Loss) Recognized in OCI on Derivatives (Effective Portion) during the Three Months Ended				Location of Loss	Loss Reclassified from Accumulated OCI into Income (Effective Portion) during the Three Months Ended
	June 30, 2014		June 30, 2013		Reclassified into Income	June 30, 2014			June 30, 2013
Interest rate swaps	$	184	$	249	Interest Expense	$	(47	)	$	(85	)

(in thousands)	Gain (Loss) Recognized in OCI on Derivatives (Effective Portion) during the Six Months Ended				Location of Loss	Loss Reclassified from Accumulated OCI into Income (Effective Portion) during the Six Months Ended
	June 30, 2014		June 30, 2013		Reclassified into Income	June 30, 2014			June 30, 2013
Interest rate swaps	$	371	$	526	Interest Expense	$	(111	)	$	(170	)