13. Stock-based Compensation Plans (Details)	Dec. 31, 2012	Dec. 31, 2011
Details
Common shares reserved for issuance on exercise of options 2011 Plan	110,000	40,000
Shares available for future option grants 2011 Plan	890,000	960,000
Common shares reserved for issuance on exercise of options 1997 Plan	57,000	113,000
Common shares reserved for issuance on exercise of options 2000 Plan	150,000	160,000