Note 18 - Equity-method Investment (Tables)

12 Months Ended

Dec. 31, 2015

Consolidated Statement of Operations [Member]

Notes Tables

Equity Method Investments [Table Text Block]

	Year Ended December 31,
	2015		2014		2013
Asset impairments to write investment down to fair value	$	16,521	$	1,853	$	—
Our portion of the partnership’s operating losses		6,929		1,160		—
Non-cash interest expense related to the amortization of the discounted fair value of future equity contributions		674		152		—
Tax benefits and credits generated		30,832		6,506		—

Consolidated Balance Sheet [Member]

Notes Tables

Equity Method Investments [Table Text Block]

	December 31,
	2015		2014
Carrying value, recorded as a component of other non-current assets	$	22,284	$	33,282
Present value of obligation associated with future equity contributions, recorded as a component of accrued liabilities and other long-term liabilities		22,511		32,177