Subsequent Events	12 Months Ended
Dec. 31, 2017
Subsequent Events.
Subsequent Events	15. Subsequent Events The Company has evaluated events and transactions subsequent to the balance sheet date and through March 6, 2018, the date the financial statements were available to be issued. 2018 Credit Agreement On January 19, 2018, we entered into the “2018 Credit Agreement” by and among the Company, as borrower, each of the lenders party thereto and Woodforest National Bank, as administrative agent (the “Administrative Agent”). The 2018 Credit Agreement replaces the Company’s Amended Credit Facility, as amended on May 17, 2017, by and among the Company, as borrower, each of the lenders party thereto and the Administrative Agent. The 2018 Credit Agreement consists of a $50.0 million advancing term loan (the “Advance Loan”) and a $20.0 million revolving loan, with a $10.0 million uncommitted accordion option to increase the total revolving loans (the “Revolving Loan”, and together with the Advance Loan, the “Loans”). No lender has any obligation to increase its own revolving credit commitment. The Advance Loan amortizes beginning in April 2019 and each of the Loans matures on January 19, 2022. Our obligations under the Loans are generally secured by a pledge of substantially all of the assets of the Company and its subsidiaries, and such obligations are guaranteed by our domestic subsidiaries other than Immaterial Subsidiaries (as defined in the 2018 Credit Agreement). We have the option to prepay the loans at any time without penalty. The 2018 Credit Agreement permits extensions of credit under the Advance Loan through the end of April 2019 and under the Revolving Loan until the Maturity Date. Borrowings under the Revolving Loan are limited by both commitments and a borrowing base determined monthly by calculating percentages of the eligible accounts and the eligible inventory, provided that the portion of the borrowing base attributable to eligible inventory cannot exceed 35% of the entire borrowing base. Borrowings under the Advance Loan are not to exceed 80% of the then current net orderly liquidation value of the applicable equipment or facility build out or the applicable equipment constructed or acquired which is then subject to the liens securing the Loans. Borrowings under the 2018 Credit Agreement bear interest at one-month LIBOR plus an applicable margin and interest is payable monthly. The applicable margin ranges from 3.00% to 3.50% depending on our senior leverage ratio. The 2018 Credit Agreement requires that we pay a monthly commitment fee on undrawn amounts of the Revolving Loan, ranging from 0.25% to 0.50% depending upon the average outstanding balance of the obligations relative to the Revolving Loan commitments. The 2018 Credit Agreement requires that we maintain ratios of (a) indebtedness to consolidated EBITDA of not more than 3.50 to 1.00, which steps down to 3.25 to 1.00 beginning April 1, 2018 and 3.00 to 1.00 beginning October 1, 2018, and (b) senior indebtedness to consolidated EBITDA of not more than 2.50 to 1.00, which steps down to 2.25 to 1.00 beginning April 1, 2018 and 2.00 to 1.00 beginning October 1, 2018. For the purpose of these tests, there is subtracted from indebtedness and senior indebtedness, respectively, an amount equal to the lesser of $10.0 million or 50% of unrestricted cash and cash equivalents of the Company and its subsidiaries. EBITDA, as defined in the 2018 Credit Agreement, excludes noncash items and any extraordinary, unusual or non-recurring gains, losses or expenses. The Credit Agreement also requires that we maintain a ratio of consolidated EBITDA to fixed charges of not less than 1.25 to 1.00. Capital Expenditures are permitted up to $225.0 million for the fiscal year ending December 31, 2018, and $75.0 million for fiscal year ending December 31, 2019 and each fiscal year thereafter. In addition, for fiscal years beginning on January 1, 2020, any unused availability for capital expenditures from the immediately preceding fiscal year may be carried forward to the subsequent year; provided, however that we are permitted to make any capital expenditures in an amount equal to the proceeds of equity contributions made to the Company used to fund such capital expenditures. Common stock From January 1, 2018 through March 6, 2018, 5,903,247 shares of Class B common stock were exchanged for an equal number of shares of Class A common stock. Additionally, from January 1, 2018 through March 6, 2018, 235,396 options were exercised in exchange for an equal number of shares of Class A common stock.

15. Subsequent Events

The Company has evaluated events and transactions subsequent to the balance sheet date and through March 6, 2018, the date the financial statements were available to be issued.

2018 Credit Agreement

On January 19, 2018, we entered into the “2018 Credit Agreement” by and among the Company, as borrower, each of the lenders party thereto and Woodforest National Bank, as administrative agent (the “Administrative Agent”). The 2018 Credit Agreement replaces the Company’s Amended Credit Facility, as amended on May 17, 2017, by and among the Company, as borrower, each of the lenders party thereto and the Administrative Agent. The 2018 Credit Agreement consists of a $50.0 million advancing term loan (the “Advance Loan”) and a $20.0 million revolving loan, with a $10.0 million uncommitted accordion option to increase the total revolving loans (the “Revolving Loan”, and together with the Advance Loan, the “Loans”). No lender has any obligation to increase its own revolving credit commitment. The Advance Loan amortizes beginning in April 2019 and each of the Loans matures on January 19, 2022. Our obligations under the Loans are generally secured by a pledge of substantially all of the assets of the Company and its subsidiaries, and such obligations are guaranteed by our domestic subsidiaries other than Immaterial Subsidiaries (as defined in the 2018 Credit Agreement). We have the option to prepay the loans at any time without penalty.

The 2018 Credit Agreement permits extensions of credit under the Advance Loan through the end of April 2019 and under the Revolving Loan until the Maturity Date. Borrowings under the Revolving Loan are limited by both commitments and a borrowing base determined monthly by calculating percentages of the eligible accounts and the eligible inventory, provided that the portion of the borrowing base attributable to eligible inventory cannot exceed 35% of the entire borrowing base. Borrowings under the Advance Loan are not to exceed 80% of the then current net orderly liquidation value of the applicable equipment or facility build out or the applicable equipment constructed or acquired which is then subject to the liens securing the Loans.

Borrowings under the 2018 Credit Agreement bear interest at one-month LIBOR plus an applicable margin and interest is payable monthly. The applicable margin ranges from 3.00% to 3.50% depending on our senior leverage ratio. The 2018 Credit Agreement requires that we pay a monthly commitment fee on undrawn amounts of the Revolving Loan, ranging from 0.25% to 0.50% depending upon the average outstanding balance of the obligations relative to the Revolving Loan commitments.

The 2018 Credit Agreement requires that we maintain ratios of (a) indebtedness to consolidated EBITDA of not more than 3.50 to 1.00, which steps down to 3.25 to 1.00 beginning April 1, 2018 and 3.00 to 1.00 beginning October 1, 2018, and (b) senior indebtedness to consolidated EBITDA of not more than 2.50 to 1.00, which steps down to 2.25 to 1.00 beginning April 1, 2018 and 2.00 to 1.00 beginning October 1, 2018. For the purpose of these tests, there is subtracted from indebtedness and senior indebtedness, respectively, an amount equal to the lesser of $10.0 million or 50% of unrestricted cash and cash equivalents of the Company and its subsidiaries. EBITDA, as defined in the 2018 Credit Agreement, excludes noncash items and any extraordinary, unusual or non-recurring gains, losses or expenses.

The Credit Agreement also requires that we maintain a ratio of consolidated EBITDA to fixed charges of not less than 1.25 to 1.00. Capital Expenditures are permitted up to $225.0 million for the fiscal year ending December 31, 2018, and $75.0 million for fiscal year ending December 31, 2019 and each fiscal year thereafter. In addition, for fiscal years beginning on January 1, 2020, any unused availability for capital expenditures from the immediately preceding fiscal year may be carried forward to the subsequent year; provided, however that we are permitted to make any capital expenditures in an amount equal to the proceeds of equity contributions made to the Company used to fund such capital expenditures.

Common stock

From January 1, 2018 through March 6, 2018, 5,903,247 shares of Class B common stock were exchanged for an equal number of shares of Class A common stock. Additionally, from January 1, 2018 through March 6, 2018, 235,396 options were exercised in exchange for an equal number of shares of Class A common stock.