Long-term Debt - Additional Information (Detail) shares in Millions										3 Months Ended
	Jun. 30, 2017	Mar. 31, 2017	Sep. 30, 2016	Mar. 31, 2016 USD ($)	Dec. 31, 2015 USD ($)	Sep. 28, 2015	Mar. 31, 2015 USD ($) shares	Dec. 15, 2014 USD ($)	Aug. 07, 2013 USD ($)	Mar. 31, 2016 USD ($)	Dec. 31, 2015 USD ($)	Mar. 31, 2015 USD ($)
Line of Credit Facility [Line Items]
Interest rate description										The term loans bear interest at the “Adjusted Base Rate” plus an applicable margin of 8.75 percent, or the “Eurodollar Rate” plus an applicable margin of 9.75 percent.
Payments on term loan facility										$ 3,128,000		$ 65,537,000
Minimum amount of debt obligation that will lead to change of control and insolvency proceedings										15,000,000
2014 term loan facility [Member]
Line of Credit Facility [Line Items]
Payments on term loan facility										3,100,000	$ 93,600,000
Payment of debt extinguishment costs							$ 33,500,000
Prepayment penalty						5.00%
Unamortized repayment fee				$ 4,000,000	$ 4,300,000					4,000,000	$ 4,300,000
Shares issued as consideration | shares							10.1
Shares issued as consideration, percent of outstanding common stock							19.90%
Write off of deferred debt issuance costs							$ 800,000
Debt instrument, amendment fee										$ 2,300,000
2014 term loan facility [Member] | Scenario, Forecast [Member]
Line of Credit Facility [Line Items]
Contingent total leverage ratio	3.00	3.25	4.50
Contingent minimum interest coverage ratio	2.75	2.50	1.75
Minimum annualized consolidated EBITDA to quarterly consolidated EBITDA			2
ABL Credit Facility [Member]
Line of Credit Facility [Line Items]
Commitment fee description										The borrowers will also pay an unused line fee on each of the U.S. and Canadian Facilities equal to 50 basis points when usage under the applicable facility during the preceding calendar month is less than 50 percent of the commitments or 37.5 basis points when usage under the applicable facility equals or exceeds 50 percent of the commitments for such period.
ABL Credit Facility [Member] | Maximum [Member]
Line of Credit Facility [Line Items]
Unused line fee percentage									0.50%
ABL Credit Facility [Member] | Minimum [Member]
Line of Credit Facility [Line Items]
Unused line fee percentage									0.375%
Revolving Credit Facility [Member] | Minimum [Member] | Five Consecutive Day [Member]
Line of Credit Facility [Line Items]
Excess availability threshold amount										$ 15,000,000
Excess availability period										5 days
Revolving Credit Facility [Member] | Minimum [Member] | Anytime [Member]
Line of Credit Facility [Line Items]
Excess availability threshold amount										$ 12,500,000
JP Morgan Chase Bank NA and KKR Credit Advisors (US) LLC [Member] | 2014 term loan facility [Member]
Line of Credit Facility [Line Items]
Debt term								5 years
Maximum borrowing capacity								$ 270,000,000
Effective interest rate at period end				11.00%	11.00%					11.00%	11.00%
LIBOR floor				1.25%	1.25%
Payments on term loan facility										$ 3,100,000		64,800,000
Payment of debt extinguishment costs										$ 100,000		$ 1,600,000
Prepayment penalty										2.00%		2.00%
JP Morgan Chase Bank NA and KKR Credit Advisors (US) LLC [Member] | 2014 term loan facility [Member] | Base Rate [Member]
Line of Credit Facility [Line Items]
Basis spread on variable rate								8.75%
JP Morgan Chase Bank NA and KKR Credit Advisors (US) LLC [Member] | 2014 term loan facility [Member] | Eurodollar Rate [Member]
Line of Credit Facility [Line Items]
Basis spread on variable rate				9.75%	9.75%			9.75%
Bank of America, N.A. [Member] | ABL Credit Facility [Member]
Line of Credit Facility [Line Items]
Expiry period									5 years
Sublimit for letters of credit									$ 80,000,000
Borrowing base, percent of eligible accounts receivable									85.00%
Borrowing base, percent of unbilled accounts receivable									75.00%
Borrowing base, limit on eligible unbilled accounts receivable									$ 33,000,000.0
Borrowing base, limit on milestone billings, retainage and other performance-based benchmarks									$ 23,000,000.0
Unused capacity, threshold for commitment fee, percentage									50.00%
Fronting fee									0.125%
Unused availability under line of credit				$ 47,100,000						$ 47,100,000
Line of credit, current borrowing capacity				54,200,000						54,200,000
Outstanding amount of letters of credit				47,100,000						$ 47,100,000
Minimum fixed charge coverage ratio, covenants requirements					1.15						1.15
Bank of America, N.A. [Member] | ABL Credit Facility [Member] | Minimum [Member] | Five Consecutive Day [Member]
Line of Credit Facility [Line Items]
Excess availability threshold percentage										15.00%
Bank of America, N.A. [Member] | ABL Credit Facility [Member] | Minimum [Member] | Anytime [Member]
Line of Credit Facility [Line Items]
Excess availability threshold percentage										12.50%
Bank of America, N.A. [Member] | ABL Credit Facility [Member] | U.S. Facility [Member]
Line of Credit Facility [Line Items]
Maximum borrowing capacity									$ 80,000,000
Bank of America, N.A. [Member] | ABL Credit Facility [Member] | Canadian Facility [Member]
Line of Credit Facility [Line Items]
Maximum borrowing capacity									20,000,000
Bank of America, N.A. [Member] | ABL Credit Facility [Member] | Cash [Member] | Letter of Credit [Member]
Line of Credit Facility [Line Items]
Debt instrument, cash collateral amount				40,000,000.0						$ 40,000,000.0
Bank of America, N.A. [Member] | ABL Credit Facility [Member] | Cash [Member] | Maximum [Member]
Line of Credit Facility [Line Items]
Debt instrument, cash collateral amount				$ 40,000,000.0					$ 25,000,000.0	$ 40,000,000.0