Retirement Plans (Tables)

6 Months Ended

Jun. 30, 2013

Defined Benefit Plan Disclosure [Line Items]

Schedule of Net Benefit Costs [Table Text Block]

		Three Months Ended				Six Months Ended
		June 30,				June 30,
		2013		2012		2013		2012
Service cost	$	9	$	8	$	17	$	16
Interest cost		176		311		353		621
Expected return on plan assets		(214)		(338)		(428)		(673)
Recognized net actuarial loss		53		56		106		112
Net periodic benefit cost	$	24	$	37	$	48	$	76

Defined Contribution Pension [Member]

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,
		2013		2012		2013		2012
Salaried Plan	$	495	$	620	$	944	$	1,075
Union Plan		19		19		35		36
Montreal Plan		25		32		60		59
U.K. Plan		35		16		68		30
Burnaby Plan		34		31		77		77
	$	608	$	718	$	1,184	$	1,277

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,
		2013		2012		2013		2012
Interest cost	$	80	$	80	$	160	$	163
Expected return on plan assets		(68)		(68)		(136)		(139)
Amortization of transition amount		(11)		(12)		(22)		(24)
Recognized net actuarial loss		53		52		106		107
Net periodic cost	$	54	$	52	$	108	$	107