Debt Debt (Tables)

12 Months Ended

Dec. 31, 2017

Debt [Abstract]

Investments Classified by Contractual Maturity Date [Table Text Block]

Maturities over the next five years with respect to the Company’s debt as of December 31, 2017 are as follows:

Year Ending December 31,	Debt Maturities (In thousands)
2018	$	259,930
2019	1,213
2020	1,693
2021	301,319
2022	866
Thereafter	250,000
Total	$	815,021