Fair Value of Assets and Liabilities (Tables)

9 Months Ended

Sep. 30, 2017

Fair Value Disclosures [Abstract]

Carrying value and estimated fair value of financial instruments

The following tables present the carrying values of those financial instruments and the estimated corresponding fair values at September 30, 2017 and December 31, 2016 (in thousands):

			Estimated Fair Value Measurements at September 30, 2017
	Carrying Value as of September 30, 2017		Total Fair Value		Level 1		Level 2		Level 3
Assets:
Cash and cash equivalents	$	51,526	$	51,526	$	51,526	$	—	$	—
Restricted cash and investments	24,012		24,012		20,592		3,420		—
Liabilities:
Borrowings under senior credit facility	$	1,041,874	$	1,047,844	$	—	$	1,047,844	$	—
5.875% Senior Notes due 2024	250,000		260,943		—		260,943		—
5.125% Senior Notes	300,000		305,418		—		305,418		—
5.875% Senior Notes due 2022	250,000		260,985		—		260,985		—
6.00% Senior Notes	350,000		368,571		—		368,571		—
Non-recourse debt, Australian subsidiary	549,926		549,926		—		549,926		—
Other non-recourse debt, including current portion	36,381		37,465		—		37,465		—

			Estimated Fair Value Measurements at December 31, 2016
	Carrying Value as of December 31, 2016		Total Fair Value		Level 1		Level 2		Level 3
Assets:
Cash and cash equivalents	$	68,038	$	68,038	$	68,038	$	—	$	—
Restricted cash and investments	22,319		22,319		19,614		2,705		—
Liabilities:
Borrowings under senior credit facility	$	804,500	$	795,008	$	—	$	795,008	$	—
5.875% Senior Notes due 2024	250,000		247,813		—		247,813		—
5.125% Senior Notes	300,000		292,125		—		292,125		—
5.875% Senior Notes due 2022	250,000		254,688		—		254,688		—
6.00% Senior Notes	350,000		346,938		—		346,938		—
Non-recourse debt, Australian subsidiary	454,222		454,185		—		454,185		—
Other non-recourse debt, including current portion	36,280		37,550		—		37,550		—