Property, Plant and Equipment (Tables)

12 Months Ended

Dec. 31, 2016

Property, Plant and Equipment [Abstract]

Property, Plant and Equipment [Table Text Block]

	December31,
	2016		2015
			(Restated)
Cost
Construction in progress	$	24,516	$	13,256
Plant and buildings		28,778		30,852
Machinery and equipment		35,932		39,700
Motor vehicles		1,368		1,570
Office equipment and furniture		2,534		2,566
Leasehold improvements		12,156		12,911
Total cost	$	105,284	$	100,855
Less: Accumulated depreciation
Construction in progress	$	-	$	-
Plant and buildings		8,754		8,059
Machinery and equipment		20,689		20,485
Motor vehicles		1,202		1,408
Office equipment and furniture		1,871		1,830
Leasehold improvements		5,886		5,160
Total accumulated depreciation	$	38,402	$	36,942
Property, plant and equipment, net	$	66,882	$	63,913