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Related Party Transactions	6 Months Ended
Related Party Transactions	Jun. 30, 2018
Related Party Transactions [Abstract]
Related Party Transactions	15. RELATED PARTY TRANSACTIONS Commercial Contracts In March 2014, a subsidiary of the company entered into $1.4 million of new equipment financing agreements with Amur Equipment Finance. Gordon Glade, a member of the company’s board of directors, is a shareholder of Amur Equipment Finance. Balances of $0.5 million and $0.6 million related to these financing arrangements were included in debt at June 30, 2018, and December 31, 2017, respectively. Payments, including principal and interest, totaled $69 thousand and $138 thousand during each of the three and six months ended June 30, 2018 and 2017, respectively. The weighted average interest rate for the financing agreements with Amur Equipment Finance was 6.8%. Aircraft Leases Effective January 1, 2015, the company entered into two agreements with an entity controlled by Wayne Hoovestol for the lease of two aircrafts. Mr. Hoovestol is chairman of the company’s board of directors. The company agreed to pay $9,766 per month for the combined use of up to 125 hours per year of the aircrafts. Flight time in excess of 125 hours per year will incur additional hourly charges. Payments related to these leases totaled $30 thousand and $87 thousand during the three and six months ended June 30, 2018, respectively, and $41 thousand and $102 thousand during the three and six months ended June 30, 2017, respectively. The company had no outstanding payables related to these agreements as of June 30, 2018 and $2 thousand in outstanding payables related to these agreements as of December 31, 2017.