Consolidated Balance Sheet - USD ($) $ in Thousands	Nov. 30, 2018	May 31, 2018
Current Assets
Cash and cash equivalents	$ 101,585	$ 83,074
Marketable securities (at fair value, which approximates cost)	139,385	127,736
Accounts receivable, less allowance of $1,700 and $1,550	82,282	79,086
Inventories	79,473	76,005
Prepaid expenses and other current assets	11,569	9,888
Total Current Assets	414,294	375,789
Net Property and Equipment	73,910	73,069
Other Assets
Goodwill	103,309	99,558
Other non-amortizable intangible assets	15,423	14,783
Total Assets	660,492	618,009
Current Liabilities
Accounts payable	20,555	20,750
Accrued compensation	5,216	6,065
Income taxes	1,533	165
Other accruals	11,456	11,708
Total Current Liabilities	38,760	38,688
Deferred Income Taxes	14,144	14,103
Other Non-Current Liabilities	5,514	5,043
Total Liabilities	58,418	57,834
Commitments and Contingencies (Note 8)
Equity
Preferred stock, $1.00 par value, 100,000 shares authorized, none issued and outstanding
Common stock, $0.16 par value, 60,000,000 shares authorized, 52,081,876 and 51,735,732 shares issued and outstanding at November 30, 2018 and May 31, 2018, respectively	8,334	8,278
Additional paid-in capital	215,615	202,572
Accumulated other comprehensive loss	(12,234)	(9,746)
Retained earnings	390,359	359,071
Total Stockholders' Equity	602,074	560,175
Total Liabilities and Equity	660,492	618,009
Customer-based intangibles
Other Assets
Amortizable intangible assets, net of accumulated amortization	30,022	31,841
Other Intangible Assets
Other Assets
Amortizable intangible assets, net of accumulated amortization	$ 23,534	$ 22,969

Carrying value as of the balance sheet date of liabilities incurred (and for which invoices have typically been received) and payable to vendors for goods and services received that are used in an entity's business. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

Name:	us-gaap_AccountsPayableCurrent
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount due from customers or clients, within one year of the balance sheet date (or the normal operating cycle, whichever is longer), for goods or services (including trade receivables) that have been delivered or sold in the normal course of business, reduced to the estimated net realizable fair value by an allowance established by the entity of the amount it deems uncertain of collection.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 8
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=109196051&loc=SL49130549-203045

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(3))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682