Note 10 - Leases and Commitments (Tables)

12 Months Ended

Dec. 31, 2012

Schedule of Capital Leased Assets [Table Text Block]

	(in thousands)
	Capitalized Costs			Accumulated Amortization			Net Book Value
December 31, 2012		$	67,788		$	16,366		$	51,422
December 31, 2011			72,272			22,525			49,747

Schedule of Condensed Cash Flow Statement [Table Text Block]

	(in thousands)
	For the Year Ended December 31,
	2012			2011
Amortization of leased assets		$	10,745		$	12,447
Rent expense under operating leases			3,148			3,914

Schedule of Future Minimum Lease Payments for Capital Leases [Table Text Block]

	(in thousands)
	2013			2014			2015			2016			2017			Thereafter
Future minimum payments		$	16,368		$	13,451		$	21,862		$	5,761		$	--		$	--
Future rentals under operating leases			1,290			1,009			233			44			42			296