XML 283 R72.htm IDEA: XBRL DOCUMENT v3.8.0.1
Long-Term Debt and Financing Obligations Long-term Debt Maturities (Details)
$ in Thousands
Dec. 31, 2017
USD ($)
Debt Instrument [Line Items]  
Long-term Debt, Maturities, Repayments of Principal in Year One $ 0
Long-term Debt, Maturities, Repayments of Principal in Year Two 0
Long-term Debt, Maturities, Repayments of Principal in Year Three 45,000
Long-term Debt, Maturities, Repayments of Principal in Year Four 0
Long-term Debt, Maturities, Repayments of Principal in Year Five $ 0