Business and Operations - Additional Information (Detail)		1 Months Ended					12 Months Ended
	Jan. 08, 2015	Feb. 28, 2015 USD ($) $ / shares shares	Feb. 28, 2015 EUR (€) shares	Jan. 31, 2015 USD ($)	Dec. 31, 2014 USD ($) $ / shares shares	Oct. 31, 2014 USD ($) $ / shares shares	Dec. 31, 2015 USD ($) Facility	Dec. 31, 2014 USD ($) $ / shares
Organization And Business Activities [Line Items]
Facilities | Facility							24
Gross proceeds from common stock							$ 63,300,000	$ 28,300,000
Redeemable Preferred Stock | Real Alloy Acquisition
Organization And Business Activities [Line Items]
Number of shares issued | shares		25,000	25,000
liquidation preference per share of stock issued | $ / shares		$ 1,000
Rights Offering
Organization And Business Activities [Line Items]
Number of shares issued | shares		9,800,000	9,800,000
Proceeds from Rights Offering		$ 55,000,000
Senior Secured Notes
Organization And Business Activities [Line Items]
Senior secured notes principal amount				$ 305,000,000
Debt instrument discount percentage	97.206%			97.206%
Proceeds from issuance of debt				$ 296,500,000
Debt, due date				Jan. 15, 2019			Jan. 15, 2019
Asset Based Facility
Organization And Business Activities [Line Items]
Debt, due date							Oct. 17, 2018
Maximum financing amount of factoring facility		$ 110,000,000
Factoring Facility
Organization And Business Activities [Line Items]
Maximum financing amount of factoring facility | €			€ 50,000,000
October Private Placement
Organization And Business Activities [Line Items]
Number of shares issued | shares						300,000
Sale of stock, price per share | $ / shares						$ 10.00
Gross proceeds from common stock						$ 3,000,000
Equity Offering
Organization And Business Activities [Line Items]
Number of shares issued | shares					4,400,000
Sale of stock, price per share | $ / shares					$ 6.50			$ 6.50
Gross proceeds from common stock					$ 28,500,000