8. Stockholders' equity

6 Months Ended

Jun. 30, 2011

Stockholders' Equity Note Disclosure [Text Block]

8. Stockholders' equity

Changes in stockholders’ equity for the six months ended June 30, 2011 were as follows (in thousands):

Balance at December 31, 2010	$	31,134
Net income		3,267
Proceeds from issuance of shares from exercise of stock options		657
Issuance of deferred stock units		141
Tax benefit related to employee stock sales and vesting of restricted stock		326
Share-based compensation expense		299
Purchases of common stock for treasury		(1,843	)
Foreign currency translation adjustment		8
Balance at June 30, 2011	$	33,989

We paid a portion of the 2010 incentive bonus for the chief executive officer and chief financial officer in the form of deferred stock units.  Such deferred stock units were granted in March 2011 and were fully vested at the time of grant.