Fair Value Disclosures Fair Value Disclosure (Tables)

6 Months Ended

Jun. 30, 2017

Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]

Schedule of Carrying Values and Estimated Fair Values of Debt Instruments [Table Text Block]

The following table presents an estimated fair value of the Company's senior notes measured on a recurring basis. The estimated value is based on Level 2 inputs, which primarily reflect estimated prices for our Notes obtained from outside pricing sources.

	June 30, 2017				December 31, 2016
	Carrying Amount		Fair Value		Carrying Amount		Fair Value
	(dollars in thousands)
7.25% Senior Notes due 2022, net (1)	$	318,121	$	334,750	$	—	$	—

(1) The carrying value for the Senior Notes, as presented, is net of the unamortized discount of $2.5 million, unamortized premium of $2.0 million, and $6.4 million of debt issuance costs. The unamortized discount, unamortized premium and debt issuance costs are not factored into the estimated fair value.