Fair Value Measurements - Financial Assets and Liabilities Measured and Recorded at Fair Value on a Recurring Basis (Details) - USD ($) $ in Thousands	May. 01, 2016	Jan. 31, 2016
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Derivative financial instruments (asset)	$ 1,895	$ 0
Total financial assets	18,768	16,866
Derivative financial instruments (liability)	1	0
Total financial liabilities	1,425	1,457
Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Derivative financial instruments (asset)	0	0
Total financial assets	16,873	16,866
Derivative financial instruments (liability)	0	0
Total financial liabilities	0	0
Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Derivative financial instruments (asset)	1,895	0
Total financial assets	1,895	0
Derivative financial instruments (liability)	1	0
Total financial liabilities	1	0
Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Derivative financial instruments (asset)	0	0
Total financial assets	0	0
Derivative financial instruments (liability)	0	0
Total financial liabilities	1,424	1,457
Cycleo [Member]
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Earn-out liability	1,424	1,457
Cycleo [Member] | Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Earn-out liability	0	0
Cycleo [Member] | Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Earn-out liability	0	0
Cycleo [Member] | Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Earn-out liability	1,424	1,457
Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Derivative financial instruments (asset)	1,895	0
Total financial assets	18,768	16,866
Derivative financial instruments (liability)	1	0
Total financial liabilities	1,425	1,457
Fair Value, Measurements, Recurring [Member] | Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Derivative financial instruments (asset)	0	0
Total financial assets	16,873	16,866
Derivative financial instruments (liability)	0	0
Total financial liabilities	0	0
Fair Value, Measurements, Recurring [Member] | Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Derivative financial instruments (asset)	1,895	0
Total financial assets	1,895	0
Derivative financial instruments (liability)	1	0
Total financial liabilities	1	0
Fair Value, Measurements, Recurring [Member] | Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Derivative financial instruments (asset)	0	0
Total financial assets	0	0
Derivative financial instruments (liability)	0	0
Total financial liabilities	1,424	1,457
Fair Value, Measurements, Recurring [Member] | Cash Equivalents [Member]
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Available-for-sale securities	16,873	16,866
Fair Value, Measurements, Recurring [Member] | Cash Equivalents [Member] | Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Available-for-sale securities	16,873	16,866
Fair Value, Measurements, Recurring [Member] | Cash Equivalents [Member] | Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Available-for-sale securities	0	0
Fair Value, Measurements, Recurring [Member] | Cash Equivalents [Member] | Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Available-for-sale securities	0	0
Fair Value, Measurements, Recurring [Member] | Triune Systems [Member]
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Earn-out liability	0	0
Fair Value, Measurements, Recurring [Member] | Triune Systems [Member] | Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Earn-out liability	0	0
Fair Value, Measurements, Recurring [Member] | Triune Systems [Member] | Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Earn-out liability	0	0
Fair Value, Measurements, Recurring [Member] | Triune Systems [Member] | Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Earn-out liability	0	0
Fair Value, Measurements, Recurring [Member] | Cycleo [Member]
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Earn-out liability	1,424	1,457
Fair Value, Measurements, Recurring [Member] | Cycleo [Member] | Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Earn-out liability	0	0
Fair Value, Measurements, Recurring [Member] | Cycleo [Member] | Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Earn-out liability	0	0
Fair Value, Measurements, Recurring [Member] | Cycleo [Member] | Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Earn-out liability	$ 1,424	$ 1,457