Fair Value Measurements (Tables)

3 Months Ended

Mar. 31, 2015

Fair Value Disclosures [Abstract]

Asset and liabilities recorded at fair value

fair value in the accompanying balance sheets as of March 31, 2015 and December 31, 2014, respectively, were as follows:

	As of March 31, 2015
	Level 1		Level 2		Total
	(In thousands)
Assets:
Investments	$	—	$	10,661	$	10,661
Debt securities:
Demand obligations	$	—	$	116	$	116
Total	$	—	$	10,777	$	10,777
Liabilities:
Interest rate derivative financial instruments	$	—	$	35,925	$	35,925
Total	$	—	$	35,925	$	35,925

	As of December 31, 2014
	Level 1		Level 2		Total
	(In thousands)
Assets:
Investments	$	—	$	12,283	$	12,283
Debt securities:
Demand obligations	$	—	$	20,304	$	20,304
Total	$	—	$	32,587	$	32,587
Liabilities:
Interest rate derivative financial instruments	$	—	$	28,653	$	28,653
Total	$	—	$	28,653	$	28,653