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Stock Options (Detail) - USD ($) | 6 Months Ended
--- | ---
Dec. 31, 2018 | Dec. 31, 2017
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |
Exercised |  | (5,000)
2012 Employee Stock Option Plan [Member] |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |
Outstanding, beginning of year | 57,200 | 70,600
Granted | 24,000 | 20,000
Terminated/Lapsed | 0 | 0
Exercised | (9,500) | (2,500)
Outstanding, end of period | 71,700 | 88,100
Exercisable, end of period | 36,500 | 60,300
Weighted average fair value at grant date of options granted | $ 8.76 | $ 5.54
Total intrinsic value of options exercised | $ 104,000 | $ 7,000
Total intrinsic value of options outstanding | 417,000 | 279,000
Total intrinsic value of options exercisable | $ 290,000 | $ 221,000
Outstanding, beginning of year, weighted average exercise price | $ 7.09 | $ 5.84
Granted, weighted average exercise price | 15.28 | 8.97
Terminated/Lapsed, weighted average exercise price | 0 | 0
Exercised, weighted average exercise price | 5.97 | 6.31
Outstanding, end of period, weighted average exercise price | 9.98 | 6.53
Exercisable, end of period, weighted average exercise price | $ 7.84 | $ 6.03
2012 Non-Employee Stock Option Plan [Member] |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |
Outstanding, beginning of year | 27,800 | 14,200
Granted | 0 | 15,000
Terminated/Lapsed | 0 | 0
Exercised | 11,000 | 0
Outstanding, end of period | 16,800 | 29,200
Exercisable, end of period | 7,800 | 15,200
Weighted average fair value at grant date of options granted |  | $ 5.55
Total intrinsic value of options exercised | $ 120,000 |
Total intrinsic value of options outstanding | 133,000 | 86,000
Total intrinsic value of options exercisable | $ 70,000 | $ 63,000
Outstanding, beginning of year, weighted average exercise price | $ 6.85 | $ 4.69
Granted, weighted average exercise price | 0 | 8.70
Terminated/Lapsed, weighted average exercise price | 0 | 0
Exercised, weighted average exercise price | 5.36 | 0
Outstanding, end of period, weighted average exercise price | 7.83 | 6.75
Exercisable, end of period, weighted average exercise price | $ 6.83 | $ 5.53
2002 Employee Stock Option Plan [Member] |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |
Outstanding, beginning of year | 0 | 5,000
Granted | 0 | 0
Terminated/Lapsed | 0 | 0
Exercised | 0 | (5,000)
Outstanding, end of period | 0 | 0
Exercisable, end of period | 0 | 0
Total intrinsic value of options exercised |  | $ 20,000
Total intrinsic value of options exercisable |  |
Outstanding, beginning of year, weighted average exercise price | $ 0 | $ 5.35
Granted, weighted average exercise price | 0 | 0
Terminated/Lapsed, weighted average exercise price | 0 | 0
Exercised, weighted average exercise price | 0 | 5.35
Outstanding, end of period, weighted average exercise price | 0 | 0
Exercisable, end of period, weighted average exercise price | $ 0 | $ 0
2018 Non-Employee Stock Option Plan [Member] |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |
Outstanding, beginning of year | 0 | 0
Granted | 20,000 | 0
Terminated/Lapsed | 0 | 0
Exercised | 0 | 0
Outstanding, end of period | 20,000 | 0
Exercisable, end of period | 4,000 | 0
Weighted average fair value at grant date of options granted | $ 10.24 |
Total intrinsic value of options outstanding | $ 0 |
Total intrinsic value of options exercisable | $ 0 |
Outstanding, beginning of year, weighted average exercise price | $ 0 | $ 0
Granted, weighted average exercise price | 16.20 | 0
Terminated/Lapsed, weighted average exercise price | 0 | 0
Exercised, weighted average exercise price | 0 | 0
Outstanding, end of period, weighted average exercise price | 16.20 | 0
Exercisable, end of period, weighted average exercise price | $ 16.20 | $ 0

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- Definition The number of shares into which fully or partially vested stock options outstanding as of the balance sheet date can be currently converted under the option plan. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1)(iii) -URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901 + Details
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- Definition The weighted-average price as of the balance sheet date at which grantees can acquire the shares reserved for issuance on vested portions of options outstanding and currently exercisable under the stock option plan. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1)(iii) -URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901 + Details
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- Definition Amount of accumulated difference between fair value of underlying shares on dates of exercise and exercise price on options exercised (or share units converted) into shares. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (d)(2) -URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901 + Details
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- Definition The number of shares under options that were cancelled during the reporting period as a result of occurrence of a terminating event specified in contractual agreements pertaining to the stock option plan. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1)(iv)(3) -URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901 + Details
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- Definition The weighted average grant-date fair value of options granted during the reporting period as calculated by applying the disclosed option pricing methodology. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (d)(1) -URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901 + Details
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- Definition Amount by which the current fair value of the underlying stock exceeds the exercise price of options outstanding. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901 + Details
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