Note 2 - Summary of Significant Accounting Policies - Reconciliation of Basic and Diluted Earnings Per Share (Details) - USD ($) $ in Thousands	3 Months Ended
	Apr. 01, 2017	Mar. 31, 2016
Net income – basic and diluted	$ 2,270	$ 2,055
Basic weighted average shares outstanding (in shares)	10,082,759	7,731,025
Effect of dilutive non-vested restricted shares and units (in shares)	334,562	198,208
Effect of issuable shares related to acquisitions (in shares)	191,431	10,580
Effect of warrants (in shares)	110,579	169,107
Diluted weighted average shares outstanding (in shares)	10,719,331	8,108,920