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Debt - Senior Credit Facility Executed at the IPO and Senior Credit Facility (Details) - USD ($) |  |  |  |  | 9 Months Ended |  |  |  |  |  |  |  |  |  |
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Mar. 31, 2017 | Jul. 08, 2015 | Jul. 31, 2013 | Dec. 17, 2012 | Sep. 30, 2016 | Dec. 31, 2016 | Oct. 01, 2016 | Sep. 29, 2016 | Aug. 01, 2016 | Jun. 01, 2016 | May 31, 2016 | Dec. 31, 2015 | Aug. 01, 2014 | Dec. 31, 2013 | Dec. 31, 2012
Senior Secured Revolving Credit Facility |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Line of credit facility, minimum borrowing capacity |  | $ 5,000,000.0 |  |  |  |  |  |  |  |  |  |  |  |  |
Adjusted tangible net worth threshold (greater than) |  | $ 18,000,000.0 |  |  |  |  |  |  |  |  |  |  |  |  |
Minimum fixed charge coverage ratio |  | 120.00% |  |  |  |  |  |  |  |  |  |  |  |  |
Maximum leverage ratio |  | 250.00% |  |  |  |  |  |  |  |  |  |  |  |  |
Debt default, change in control, ownership percentage (less than) |  | 40.00% |  |  |  |  |  |  |  |  |  |  |  |  |
Debt default, material judgment (in excess of) |  | $ 5,000,000.0 |  |  |  |  |  |  |  |  |  |  |  |  |
Senior Credit Facility |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Letters of credit issued and outstanding |  |  |  |  |  | $ 29,600,000 |  |  |  |  |  | $ 21,500,000 |  |  |
Revolving Credit Facility | Senior Secured Revolving Credit Facility | Maximum |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Commitment fee percentage |  | 0.50% |  |  |  |  |  |  |  |  |  |  |  |  |
Revolving Credit Facility | Senior Secured Revolving Credit Facility | Minimum |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Commitment fee percentage |  | 0.375% |  |  |  |  |  |  |  |  |  |  |  |  |
Revolving Credit Facility | Senior Secured Revolving Credit Facility | Eurodollar | Maximum |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Basis spread on variable rate |  | 3.00% |  |  |  |  |  |  |  |  |  |  |  |  |
Revolving Credit Facility | Senior Secured Revolving Credit Facility | Base Rate | Maximum |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Basis spread on variable rate |  | 2.00% |  |  |  |  |  |  |  |  |  |  |  |  |
Revolving Credit Facility | Senior Secured Revolving Credit Facility | Cost of Funds Rate | Maximum |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Basis spread on variable rate |  | 2.50% |  |  |  |  |  |  |  |  |  |  |  |  |
Revolving Credit Facility | Working Capital Line |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Line of credit facility, maximum borrowing capacity |  | $ 60,000,000.0 |  |  | $ 82,500,000.0 | $ 70,000,000.0 | $ 60,000,000.0 | $ 82,500,000.0 |  | $ 82,500,000.0 | $ 60,000,000.0 |  |  |  |
Line of credit facility, minimum borrowing capacity |  |  |  |  |  |  |  |  | $ 40,000,000 |  |  |  |  |  |
Working capital, maximum increase |  | $ 5,000,000.0 |  |  |  |  |  |  |  |  |  |  |  |  |
Working capital, percentage of borrowing capacity |  | 15.00% |  |  |  |  |  |  |  |  |  |  |  |  |
Adjusted tangible net worth, aggregate commitments percentage |  | 20.00% |  |  |  |  |  |  |  |  |  |  |  |  |
Revolving Credit Facility | Working Capital Line | Maximum |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Line of credit, availability |  | $ 82,500,000.0 |  |  |  |  |  |  |  |  |  |  |  |  |
Borrowing base calculated on value of eligible accounts receivable, unbilled product sales, inventory and other working capital assets, percentage |  | 90.00% |  |  |  |  |  |  |  |  |  |  |  |  |
Revolving Credit Facility | Working Capital Line | Minimum |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Line of credit, availability |  | $ 40,000,000.0 |  |  |  |  |  |  |  |  |  |  |  |  |
Borrowing base calculated on value of eligible accounts receivable, unbilled product sales, inventory and other working capital assets, percentage |  | 80.00% |  |  |  |  |  |  |  |  |  |  |  |  |
Revolving Credit Facility | Working Capital Line | Federal Funds Rate |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Basis spread on variable rate |  | 0.50% |  |  |  |  |  |  |  |  |  |  |  |  |
Revolving Credit Facility | Working Capital Line | Reference Eurodollar Rate |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Basis spread on variable rate |  | 1.00% |  |  |  |  |  |  |  |  |  |  |  |  |
Revolving Credit Facility | Acquisition Line |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Line of credit facility, maximum borrowing capacity |  | $ 25,000,000.0 |  |  | $ 25,000,000.0 |  |  |  |  |  |  |  |  |  |
Financing of cost of acquisitions, maximum percentage |  | 75.00% |  |  | 75.00% |  |  |  |  |  |  |  |  |  |
Annual payment percentage |  | 25.00% |  |  |  |  |  |  |  |  |  |  |  |  |
Remaining payment due at maturity, percentage |  | 50.00% |  |  |  |  |  |  |  |  |  |  |  |  |
Nonutilization fee |  | 0.50% |  |  |  |  |  |  |  |  |  |  |  |  |
Adjusted tangible net worth, borrowings percentage |  | 33.00% |  |  |  |  |  |  |  |  |  |  |  |  |
Revolving Credit Facility | Acquisition Line | Eurodollar |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Basis spread on variable rate |  | 3.75% |  |  |  |  |  |  |  |  |  |  |  |  |
Revolving Credit Facility | Acquisition Line | Base Rate |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Basis spread on variable rate |  | 2.75% |  |  |  |  |  |  |  |  |  |  |  |  |
Revolving Credit Facility | Acquisition Line | Federal Funds Rate |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Basis spread on variable rate |  | 0.50% |  |  |  |  |  |  |  |  |  |  |  |  |
Revolving Credit Facility | Acquisition Line | Reference Eurodollar Rate |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Basis spread on variable rate |  | 1.00% |  |  |  |  |  |  |  |  |  |  |  |  |
Revolving Credit Facility | Senior Credit Facility | Senior Secured Revolving Credit Facility |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Line of credit facility, maximum borrowing capacity |  |  |  |  |  |  |  |  |  |  |  |  | $ 70,000,000.0 |  |
Contingent maximum borrowing capacity |  |  |  |  |  |  |  |  |  |  |  |  | 120,000,000.0 |  |
Line of credit facility, outstanding |  |  |  |  |  |  |  |  |  |  |  |  | 10,000,000 |  |
Reduction to interest rate if facility utilization is less than fifty percent |  | 25.00% |  |  |  |  |  |  |  |  |  |  |  |  |
Working Capital Facility |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Line of credit facility, maximum borrowing capacity |  |  | $ 80,000,000 | $ 70,000,000 |  |  |  |  |  |  |  |  |  |  | $ 150,000,000
Working capital credit facility outstanding portion paid by affiliate |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 29,000,000 |
Commitment fee percentage |  |  | 0.50% |  |  |  |  |  |  |  |  |  |  |  |
Nonutilization fee |  |  |  | 0.50% |  |  |  |  |  |  |  |  |  |  |
Working Capital Facility | Eurodollar | Maximum |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Basis spread on variable rate |  |  | 3.25% | 3.75% |  |  |  |  |  |  |  |  |  |  |
Working Capital Facility | Eurodollar | Minimum |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Basis spread on variable rate |  |  | 3.00% | 3.00% |  |  |  |  |  |  |  |  |  |  |
Working Capital Facility | Base Rate | Maximum |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Basis spread on variable rate |  |  | 2.25% | 2.75% |  |  |  |  |  |  |  |  |  |  |
Working Capital Facility | Base Rate | Minimum |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Basis spread on variable rate |  |  | 2.00% | 2.00% |  |  |  |  |  |  |  |  |  |  |
Working Capital Facility | Cost of Funds Rate | Maximum |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Basis spread on variable rate |  |  | 2.75% |  |  |  |  |  |  |  |  |  |  |  |
Working Capital Facility | Cost of Funds Rate | Minimum |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Basis spread on variable rate |  |  | 2.50% |  |  |  |  |  |  |  |  |  |  |  |
Working Capital Facility | Senior Credit Facility |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Working capital credit facility outstanding portion paid by affiliate |  |  |  |  |  |  |  |  |  |  |  |  | 29,000,000 |  |
Letters of credit issued and outstanding |  |  |  |  |  |  |  |  |  |  |  |  | $ 15,000,000 |  |
Scenario, Forecast | Senior Secured Revolving Credit Facility |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Minimum fixed charge coverage ratio | 125.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |

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- Definition Debt Instrument, Reduction In Interest Rate If Facility Utilization Less Than Fifty Percent + References No definition available. + Details
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- Definition Line Of Credit Facility, Contingent Maximum Borrowing Capacity + References No definition available. + Details
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- Definition The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(22)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(16)) -URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(16)) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 + Details
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- Definition The fee, expressed as a percentage of the line of credit facility, for the line of credit facility regardless of whether the facility has been used. + References No definition available. + Details
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- Definition Amount of current borrowing capacity under the credit facility considering any current restrictions on the amount that could be borrowed (for example, borrowings may be limited by the amount of current assets), but without considering any amounts currently outstanding under the facility. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.19(b),22(b)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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- Definition Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.19(b),22(b)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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- Definition The fee, expressed as a percentage of the line of credit facility, for available but unused credit capacity under the credit facility. + References No definition available. + Details
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