STOCKHOLDERS' EQUITY: (Details 3)	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011
Directors' Stock Award Plan
Share based compensation plan
Common shares received on election as director	1,200
Additional shares issued at each annual general meeting	1,200
Total SCC shares reserved for the plan	600,000	600,000
Activity in directors' stock award plan
Granted at the beginning of the period (in shares)	(271,200)	(256,800)
Granted in the period (in shares)	(14,400)	(14,400)
Granted at the end of the period (in shares)	(285,600)	(271,200)
Remaining shares reserved	314,400	328,800
Employee Stock Purchase Plan
Share based compensation
Percentage of title acquire by employee in every two years on shares paid in previous two years	50.00%
The period describing the expiration of the contribution period and the bonus eligibility	8 years
Bonus shares granted to participant (as a ratio)	0.1
Employee Stock Purchase Plan | Voluntary resignation
Share based compensation
Deduction over the amount to be paid to the employee on termination of employment after first year (as a percent)	90.00%
Deduction over the amount to be paid to the employee on termination of employment after second year (as a percent)	80.00%
Deduction over the amount to be paid to the employee on termination of employment after third year (as a percent)	70.00%
Deduction over the amount to be paid to the employee on termination of employment after fourth year (as a percent)	60.00%
Deduction over the amount to be paid to the employee on termination of employment after fifth year (as a percent)	50.00%
Deduction over the amount to be paid to the employee on termination of employment after sixth year (as a percent)	40.00%
Deduction over the amount to be paid to the employee on termination of employment after seventh year (as a percent)	20.00%
Employee Stock Purchase Plan | Involuntary termination
Share based compensation
Deduction over the amount to be paid to the employee on termination of employment after first year (as a percent)	100.00%
Deduction over the amount to be paid to the employee on termination of employment after second year (as a percent)	95.00%
Deduction over the amount to be paid to the employee on termination of employment after third year (as a percent)	90.00%
Deduction over the amount to be paid to the employee on termination of employment after fourth year (as a percent)	80.00%
Deduction over the amount to be paid to the employee on termination of employment after fifth year (as a percent)	70.00%
Deduction over the amount to be paid to the employee on termination of employment after sixth year (as a percent)	60.00%
Deduction over the amount to be paid to the employee on termination of employment after seventh year (as a percent)	50.00%