Retirement Plans (Tables)

9 Months Ended

Sep. 30, 2014

Defined Benefit Plan Disclosure [Line Items]

Schedule of Costs of Retirement Plans [Table Text Block]

		Three Months Ended				Nine Months Ended
		September 30,				September 30,
		2014		2013		2014		2013
Salaried Plan	$	672	$	478	$	1,751	$	1,422
Union Plan		20		18		59		53
Montreal Plan		20		28		65		88
United Kingdom Plan		32		27		100		95
Burnaby Plan		32		34		107		111
	$	776	$	585	$	2,082	$	1,769

United States Pension Plans of US Entity, Defined Benefit [Member]

Defined Benefit Plan Disclosure [Line Items]

Schedule of Net Benefit Costs [Table Text Block]

		Three Months Ended				Nine Months Ended
		September 30,				September 30,
		2014		2013		2014		2013
Service cost	$	5	$	8	$	17	$	25
Interest cost		193		177		578		530
Expected return on plan assets		(242)		(214)		(726)		(642)
Recognized net actuarial loss		16		53		49		159
Net periodic pension (income) cost	$	(28)	$	24	$	(82)	$	72

United Kingdom Benefit Plans [Member]

Defined Benefit Plan Disclosure [Line Items]

Schedule of Net Benefit Costs [Table Text Block]

		Three Months Ended				Nine Months Ended
		September 30,				September 30,
		2014		2013		2014		2013
Interest cost	$	97	$	85	$	297	$	255
Expected return on plan assets		(92)		(73)		(281)		(219)
Amortization of transition amount		(7)		(12)		(21)		(36)
Recognized net actuarial loss		49		57		149		171
Net periodic pension cost	$	47	$	57	$	144	$	171