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Lease Obligations (Tables)
6 Months Ended
Jun. 30, 2017
Leases [Abstract]  
Schedule of Future Minimum Lease Payments for Capital and Operating Leases [Table Text Block]
The future minimum lease payments required under capital leases and operating leases, together with their present value of capital leases, as of June 30, 2017 were as follows:
 
 
 
Capital
 
Operating
 
(In thousands)
 
Lease
Obligations
 
Lease
Obligations
 
 
 
 
 
 
 
 
 
Remainder of 2017
 
$
610
 
$
1,631
 
2018
 
 
1,220
 
 
2,796
 
2019
 
 
1,220
 
 
2,326
 
2020
 
 
1,219
 
 
1,693
 
2021
 
 
403
 
 
1,125
 
Thereafter
 
 
 
 
1,554
 
Total minimum lease payments
 
$
4,672
 
$
11,125
 
Interest
 
 
(271)
 
 
 
 
Net present value of minimum lease payments
 
 
4,401
 
 
 
 
Less: Current portion of capital lease obligations
 
 
1,101
 
 
 
 
Long-term capital lease obligations
 
$
3,300