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CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($)
$ in Thousands
 12 Months Ended
Jan. 31, 2017
Jan. 31, 2016
Jan. 31, 2015
Cash flows from operating activities:      
Net income including noncontrolling interests $ 35,139 $ 45,765 $ 51,900
Adjustments to reconcile net income to net cash provided by operating activities:      
Depreciation and amortization 11,507 13,156 12,469
Write-down of inventories 2,757 3,108 2,514
Transactional losses / (gains) 2,041 (2,388) 2,493
Deferred income taxes (3,753) (1,817) 6,316
Gain on available-for-sale securities     (131)
Stock-based compensation 7,281 6,123 5,753
Excess tax expense / (benefit) from stock-based compensation 265 31 (1,270)
Impairment of long-term investment 1,282    
Operating efficiency initiatives and other items   3,996  
Loss on disposal of fixed assets   310  
Changes in assets and liabilities:      
Trade receivables 2,878 (354) (9,334)
Inventories 7,442 (3,133) 4,523
Other current assets 512 2,808 (3,323)
Accounts payable (401) 774 (5,357)
Accrued liabilities 244 (94) (1,582)
Accrued payroll and benefits (4,227) 6,035 (9,443)
Income taxes payable (2,479) (746) 4,300
Other non-current assets (7,569) 1,864 (3,954)
Other non-current liabilities 5,499 (848) 3,722
Net cash provided by operating activities 58,418 74,590 59,596
Cash flows from investing activities:      
Capital expenditures (5,920) (8,070) (11,132)
Trademarks and other intangibles (328) (650) (118)
Short-term investment (152)    
Long-term investment     (1,200)
Restricted cash deposits (1,156) (435)  
Proceeds from short-term investment     33,736
Proceeds from available-for-sale securities     307
Net cash (used in) / provided by investing activities (7,556) (9,155) 21,593
Cash flows from financing activities:      
Proceeds from bank borrowings 3,000 50,000  
Repayments of bank borrowings (13,000) (10,000)  
Stock options exercised and other changes (296) (25) 291
Excess tax (expense) / benefit from stock-based compensation (265) (31) 1,270
Stock repurchase (3,864) (48,748) (26,382)
Purchase of incremental ownership of joint venture (1,320) (4,267)  
Debt issuance cost   (339) (936)
Distribution of noncontrolling interest earnings     (319)
Dividends paid (11,930) (10,312) (10,104)
Net cash (used in) financing activities (27,675) (23,722) (36,180)
Effect of exchange rate changes on cash and cash equivalents 4,904 (13,377) (2,816)
Net increase in cash and cash equivalents 28,091 28,336 42,193
Cash and cash equivalents at beginning of year 228,188 199,852 157,659
Cash and cash equivalents at end of year $ 256,279 $ 228,188 $ 199,852