Fair Value Measurements (Tables)

3 Months Ended

Mar. 31, 2018

Fair Value Measurements

Schedule of carrying amount and estimated fair value of long-term debt and capital lease obligations

	March 31, 2018				December 31, 2017
	Carrying		Fair		Carrying		Fair
	Amount		Value		Amount		Value
Senior Notes	$	352,372	$	372,110	$	352,224	$	374,624
Other long-term debt and capital lease obligations		48,419		48,419		48,793		48,793
Total long-term debt and capital lease obligations	$	400,791	$	420,529	$	401,017	$	423,417