Supplemental Schedule of Noncash Investing and Financing Activities (USD $)	3 Months Ended
Mar. 31, 2012	Mar. 31, 2011
Shares issued for consulting services (in shares)	0	1,100,000
Shares issued for consulting services, par value (in dollars per share)	$ 0	$ 0.02

Face amount or stated value of common stock per share, shares issued for consulting services in noncash investing and financing activities.

No definition available.

Name:	sglb_SharesIssuedForConsultingServicesParValue
Namespace Prefix:	sglb_
Data Type:	num:perShareItemType
Balance Type:	na
Period Type:	duration