Summary of Significant Accounting Policies and Basis of Presentation - Additional Information (Detail) In Thousands, except Share data, unless otherwise specified	12 Months Ended								12 Months Ended		1 Months Ended	12 Months Ended														12 Months Ended
	Dec. 31, 2013 USD ($)	Dec. 31, 2012 USD ($)	Dec. 31, 2011 USD ($)	Dec. 31, 2013 Stock options outstanding under the 1993,1997, 2006 and 2011 Stock Option Plans USD ($)	Dec. 31, 2012 Stock options outstanding under the 1993,1997, 2006 and 2011 Stock Option Plans USD ($)	Dec. 31, 2011 Stock options outstanding under the 1993,1997, 2006 and 2011 Stock Option Plans USD ($)	Dec. 31, 2013 Production tooling USD ($)	Dec. 31, 2012 Production tooling USD ($)	Dec. 31, 2013 Minimum	Dec. 31, 2013 Maximum	Sep. 14, 2012 Intellectual Property USD ($)	Dec. 31, 2013 Intellectual Property USD ($)	Dec. 31, 2012 Intellectual Property USD ($)	Dec. 31, 2013 Patents USD ($)	Dec. 31, 2012 Patents USD ($)	Dec. 31, 2011 Patents USD ($)	Dec. 31, 2013 Johnson Controls Inc.	Dec. 31, 2012 Johnson Controls Inc.	Dec. 31, 2013 Lear Corporation	Dec. 31, 2012 Lear Corporation	Dec. 31, 2013 Magna International Inc.	Dec. 31, 2012 Magna International Inc.	Dec. 31, 2013 W.E.T EUR (€)	Oct. 31, 2013 W.E.T EUR (€)	Dec. 31, 2012 W.E.T	Dec. 31, 2013 W.E.T Minimum
Accounting Policies [Line Items]
Maturity period of cash equivalents	90 days
Percentage of accounts receivable balance																	27.00%	26.00%	24.00%	18.00%	7.00%	7.00%
Depreciation expense	$ 14,810	$ 14,298	$ 8,954
Rights and ownership purchase of intellectual property			37								7,000			7,000
Estimated useful life of intangible assets											7 years
Amortization of intangibles												984	285	3,340	2,522	1,152
Indefinite-lived trademark assets		166
Payment terms of contracts									30 days	120 days
Reimbursable tooling capitalized within prepaid expenses and other current assets							1,691	1,878
Share based compensation expense	3,103	823	1,403	3,103	823	1,403
Related deferred tax benefit	$ 1,887	$ 1,316		$ 419	$ 301	$ 427
Guaranteed compensation, gross																							€ 3.71
Guaranteed compensation, net																							€ 3.17
Tender offer per share amount for acquisition																							€ 44.95
Business acquisition potential cash payment per share																							€ 85.00	€ 90.05
Domination and Profit and Loss Transfer termination period																										5 years
Shares tendered under DPLTA																							23,722
Business acquisition remaining outstanding shares acquired																								16,147
Non-controlling interest ownership percentage by non controlling owners																							0.00%		24.08%
Ownership percentage in W.E.T	100.00%