Note 8 - Financing Arrangements (Tables)

9 Months Ended

Sep. 30, 2014

Debt Disclosure [Abstract]

Schedule of Guarantor Obligations [Table Text Block]

Fixed Charge Coverage Ratio	Revolver ABR Spread	Revolver Eurodollar Spread
Category 1 > 1.50 to 1.0	0.50%	1.50%
Category 2 > 1.25 to 1.00 but < 1.50 to 1.00	0.75%	1.75%
Category 3 < 1.25 to 1.00	1.00%	2.00%

Carrying Amount of Liability Component and Remaining Unamortized Debt Discount [Table Text Block]

	SEPTEMBER 30, 2014		DECEMBER 31, 2013
Carrying amount of equity component	$	20,470	$	20,470
Carrying amount of the liability component		112,035		108,750
Unamortized discount of the liability component		7,965		11,250
Unamortized deferred financing costs		1,440		2,034

Expenses in Relation to Convertible Notes [Table Text Block]

	Three months ended September 30,				Nine months ended September 30,
	2014		2013		2014		2013
Expense Description
Interest expense at 3.5% coupon rate (1)	$	1,050	$	1,050	$	3,150	$	3,150
Debt discount amortization (1)		1,115		1,037		3,285		3,057
Amortization of deferred financing costs		201		188		594		553
	$	2,366	$	2,275	$	7,029	$	6,760