Note 11 - Stock Based Compensation Plans (Details) - Stock Option Activity (USD $) In Thousands, except Share data, unless otherwise specified	0 Months Ended	12 Months Ended
	Jan. 01, 2013	Dec. 31, 2014	Dec. 31, 2013		Jan. 01, 2013
Stock Option Activity [Abstract]
Covered shares		3,095,327	3,550,599		3,061,393
Weighted average exercise price		$ 1.07	$ 0.99		$ 0.71
Weighted average remaining contractual term	6 years 6 months	6 years 142 days	6 years 233 days
Aggregate intrinsic value		$ 1,322	$ 3,577		$ 3,169
Exercisable at December 31, 2014		2,448,788
Exercisable at December 31, 2014		$ 0.84
Exercisable at December 31, 2014		5 years 226 days
Exercisable at December 31, 2014		1,259
Vested and expected to vest at December 31, 2014		3,037,422
Vested and expected to vest at December 31, 2014		$ 1.05
Vested and expected to vest at December 31, 2014		5 years 306 days
Vested and expected to vest at December 31, 2014		1,576
Granted in 2013 (1)			793,000	[1]
Granted in 2013 (1)			$ 2.02	[1]
Granted in 2013 (1)			36	[1]
Covered shares, exercised/cancelled		(453,522)	(202,233)
Weighted average exercise price, exercised/cancelled		$ 0.53	$ 0.61
Aggregate intrinsic value, exercised/cancelled		$ 445	$ 286
Forfeited or expired,Covered shares		(1,750)	(101,561)
Forfeited or expired, Weighted average exercise price		$ 1.01	$ 1.19

[1] Includes a stock option Award covering 300,000 SGRP Shares issued on December 2, 2013, to Ms. Jill M. Blanchard in connection with her employment on that date as the Company's Chief Executive Officer and President.