Condensed Consolidated Statements of Comprehensive Income (Loss) (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Apr. 01, 2018	Apr. 02, 2017
Statement of Comprehensive Income [Abstract]
Net sales	$ 517,879	$ 487,181
Cost of goods sold	412,450	391,624
Gross profit	105,429	95,557
Selling, general and administration expenses	68,211	65,110
Restructuring costs, net	0	293
Operating income (loss)	37,218	30,154
Interest expense (income), net	8,756	7,024
Other expense (income), net	(272)	(514)
Income (loss) from continuing operations before income tax expense (benefit)	28,734	23,644
Income tax expense (benefit)	6,701	(1,679)
Income (loss) from continuing operations	22,033	25,323
Income (loss) from discontinued operations, net of tax	(250)	(245)
Net income (loss)	21,783	25,078
Less: net income (loss) attributable to non-controlling interest	957	1,513
Net income (loss) attributable to Masonite	$ 20,826	$ 23,565
Earnings (loss) per common share attributable to Masonite:
Basic earnings per common share attributable to Masonite (in dollars per share)	$ 0.74	$ 0.79
Diluted earnings per common share attributable to Masonite (in dollars per share)	0.73	0.77
Earnings (loss) per common share from continuing operations attributable to Masonite:
Basic (in dollars per share)	0.75	0.80
Diluted (in dollars per share)	$ 0.74	$ 0.78
Other comprehensive income (loss):
Net income (loss)	$ 21,783	$ 25,078
Foreign currency translation gain (loss)	5,774	5,730
Amortization of actuarial net losses	300	292
Income tax benefit (expense) related to other comprehensive income (loss)	(100)	(757)
Other comprehensive income (loss), net of tax	5,974	5,265
Comprehensive income (loss)	27,757	30,343
Less: comprehensive income (loss) attributable to non-controlling interest	714	1,617
Comprehensive income (loss) attributable to Masonite	$ 27,043	$ 28,726