Retirement Plans (Tables)

6 Months Ended

Jun. 30, 2014

Defined Benefit Plan Disclosure [Line Items]

Schedule of Costs of Retirement Plans [Table Text Block]

		Three Months Ended				Six Months Ended
		June 30,				June 30,
		2014		2013		2014		2013
Salaried Plan	$	523	$	495	$	1,079	$	944
Union Plan		22		19		39		35
Montreal Plan		20		25		45		60
United Kingdom Plan		30		35		68		68
Burnaby Plan		36		34		75		77
	$	631	$	608	$	1,306	$	1,184

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				Six Months Ended
		June 30,				June 30,
		2014		2013		2014		2013
Service cost	$	6	$	9	$	12	$	17
Interest cost		192		176		385		353
Expected return on plan assets		(242)		(214)		(484)		(428)
Recognized net actuarial loss		17		53		33		106
Net periodic pension (income) cost	$	(27)	$	24	$	(54)	$	48

United Kingdom Benefit Plans [Member]

Defined Benefit Plan Disclosure [Line Items]

Schedule of Net Benefit Costs [Table Text Block]

		Three Months Ended				Six Months Ended
		June 30,				June 30,
		2014		2013		2014		2013
Interest cost	$	101	$	80	$	200	$	160
Expected return on plan assets		(95)		(68)		(189)		(136)
Amortization of transition amount		(7)		(11)		(14)		(22)
Recognized net actuarial loss		50		53		100		106
Net periodic pension cost	$	49	$	54	$	97	$	108