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CONSOLIDATED STATEMENTS OF CASH FLOWS (UNAUDITED) - USD ($)
$ in Thousands
 9 Months Ended
Jan. 28, 2018
Jan. 29, 2017
Cash flows from operating activities:    
Net income $ 8,211 $ 16,136
Adjustments to reconcile net income to net cash provided by operating activities:    
Depreciation 5,679 5,304
Amortization of assets 248 162
Stock-based compensation 2,422 2,619
Deferred income taxes (3,020) 3,533
Realized loss on sale of short-term investments (Available for Sale)   12
Gain on sale of equipment   (71)
Loss from investment in unconsolidated joint venture 249  
Foreign currency exchange loss (gain) 133 (18)
Changes in assets and liabilities:    
Accounts receivable (923) 340
Inventories (3,275) (137)
Other current assets (27) 90
Other assets (37) 51
Accounts payable - trade 1,715 (946)
Accrued expenses and deferred compensation (1,608) (668)
Income taxes 11,702 (1,695)
Net cash provided by operating activities 21,469 24,712
Cash flows from investing activities:    
Capital expenditures (6,657) (9,253)
Investment in unconsolidated joint venture (661) (600)
Proceeds from the sale of equipment 6 80
Proceeds from the sale of short-term investments (Available for Sale)   2,000
Purchase of short-term investments (Available for Sale) (37) (8)
Purchase of long-term investments (Held-To-Maturity)   (31,050)
Proceeds from the sale of long-term investments (Rabbi Trust) 57  
Purchase of long-term investments (Rabbi Trust) (1,699) (1,431)
Premium payment on life insurance policy (18) (18)
Net cash used in investing activities (9,009) (40,280)
Cash flows from financing activities:    
Proceeds from line of credit 10,000 7,000
Payments on line of credit (10,000) (7,000)
Payments on vendor-financed capital expenditures (3,750) (1,050)
Dividends paid (5,722) (5,292)
Common stock surrendered for withholding taxes payable (1,530) (280)
Payments on debt issuance costs   (2)
Proceeds from common stock issued 111 37
Net cash used in financing activities (10,891) (6,587)
Effect of exchange rate changes on cash and cash equivalents 64 27
Decrease in cash and cash equivalents 1,633 (22,128)
Cash and cash equivalents at beginning of period 20,795 [1] 37,787
Cash and cash equivalents at end of period $ 22,428 $ 15,659
[1] Derived from audited financial statements.