5. Shareholders' equity (Tables)

6 Months Ended

Jun. 30, 2015

Stockholders' Equity Note [Abstract]

Schedule of Stockholders Equity [Table Text Block]

Balance at December 31, 2014	$	25,394
Net income		1,532
Share-based compensation expense		269
Issuance of deferred stock units, net of relinquishments		121
Foreign currency translation adjustment		4
Dividends declared and paid on common stock		(1,243)
Purchase of common stock for treasury		(1,020)
Balance at June 30, 2015	$	25,057